Hello all. I hope our readers don’t mind that I’m taking a bit of a diversion here today to engage in a little shameless self-promotion. Basically, I wanted to talk about my recently-published novel – The Jovian Manifesto. This book is the sequel to The Cronian Incident, which was published last year (and was a little shamelessly promoted at the time).
However, I also wanted to take this opportunity to talk about hard science fiction and how writing for a science publication helped me grow as a writer. By definition, hard sci-fi refers to stories where scientific accuracy is emphasized. This essentially means that the technology in the story conforms to established science and/or what is believed to be feasible in the future.
Have you ever wanted to get into the hobby of astronomy but don’t know where to start? It can be challenging, especially with the bewildering array of telescopes, objects in the night sky, and techniques. Our new book, The Universe Today Ultimate Guide to Viewing the Cosmos, is all you need to get started.
After years of discussing the idea, and about a year’s worth of essays, outlines, revisions and re-revisions, we’re happy to announce that our first full astronomy book comes out on October 23rd, 2018 courtesy of Page Street Publishing.
We’re talking about the Universe Today Guide to Viewing the Night Sky: Everything You Need to Know to Become an Amateur Astronomer. It’s already up available for pre-order on Amazon now, and we jam-packed it full with the very latest tips from the fast-changing world of amateur astronomy.
We drew off of decades of experience as an amateur astronomer and science writer, to show you just how far the field has evolved in just a few short decades. When I was a kid growing up as a child of the 70s (1970s that is!), a 6-inch Newtonian was a big ‘scope, Jupiter had twelve moons and we took pictures on plastic strips coated with a gelatin emulsion known as ‘film’. Today, you can purchase a ‘scope and camera rig for your backyard observatory that would be the envy of many a university, and discover comets before bedtime online.
Why write one more ‘how to get started in astronomy’ guide? Hasn’t it all been done before? Well, our aim was not to write a textbook, but build something new, packed full of actionable information for backyard observers. If you’re a beginner, we’ll show you how to find your way around the sky, how to follow the planets and how things change overhead night to night, season to season and year to year. Even mid- to advanced observers may find out something new in the book, including, for example, how to hunt for and report a new comet discovery and tracking clandestine satellites.
The book is also chock of never before seen photos from dozens of astrophotographers from around the world. These cover the gamut of skill sets, from basic shots of the Moon and planets, to award-winning photos of eclipses and rocket launches. When it comes to astrophotography, our goal in the book was to take the beginner “over the hump” from doing basic star trail shots to deep sky astrophotography, a very steep learning curve to climb. Modern DSLRs, however, have made the entry into basic astrophotography easier than ever before.
What satellite is that? Want to build a planetary webcam? How about doing interferometry… from your backyard? Each chapter of the book is packed with projects galore. We’ve personally completed every project in the book over the years, (except for the Sun Funnel, which was done by Dr Pamela Gay), and we shared all of our experiences in the book.
We also shared our own personal narrative throughout the book, a journey of several decades in amateur astronomy doing star parties, using telescopes, chasing eclipses and observing from around the world. The history of astronomy is a fascinating one, and the roles of professional and amateur astronomers blur, then merge as you travel back in time. We tell some of those fascinating tales in the book, from how we almost ended up with a planet named George, to whether or not Copernicus really saw Mercury, to why deep sky cataloger Charles Messier is buried in the same graveyard as rock star Jim Morrison. These fascinating asides give us insight in just how the largely untold story of the history amateur astronomy played out against the backdrop of human drama over the millennia.
One key challenge with writing a book is the long production trail of often a year or more. You want to write something that’s ageless, but we all want to stuff the very latest facts in discoveries in there, as well. We raced to add in the very latest space news (the passage of interstellar asteroid 1/I ‘Oumuamua through the inner solar system in late 2017 was a good example) all of which threatened to make the book obsolete before it ever hit the shelves. We grew up with seminal classics such as T.W. Webb’s Celestial Objects for Common Telescopes, Guy Ottewell’s annual Astronomical Calendar and Burnham’s 3 volume Celestial Handbook, all essential guides still sitting on our desktop that have stubbornly resisted digitization. We still marvel at these works and pick them up and peruse through them like old friends. It’s our fondest hope that our new book lights the same tiny spark of inspiration as those classics.
The book also contains some unique graphics, from the geometry of eclipses, to just how satellite orbits work and more. We worked hard to give the reader some unique perspectives with these graphics, something you won’t find anywhere else. We can also now say personally, as a writer of both fiction and non-fiction, that doing a simple “wall of words” novel versus text and graphics now feels like only doing half a book!
Hopefully, this book will ignite the spark to get you out and observe, not only on every clear night, but to simply see the wonder and weirdness that surrounds us, everyday. Amateur astronomy is now nearly as much an online pursuit as it is a backyard hobby, and we lead the reader to those essential websites to show you where we’re looking when a new comet is discovered or when the Sun erupts in activity.
What’s next? Well, one aspect we really wanted to do up right was a set of concise constellation charts, covering the entire sky. We had to settle for basic overview charts to familiarize the reader with the sky by seasons and the overall layout of the constellations—otherwise the book would’ve been twice as long (and took twice the time) to write. Our hopes are to create a compendium star atlas for the book… soon.
Be sure to check out the Universe Today Ultimate Guide to Viewing the Cosmos – out October 23rd, now up for pre-order, for inspiration and an introduction to the fascinating world of amateur astronomy.
On March 30, 2017, SpaceX performed a pretty routine rocket launch. The payload was a communications satellite called SES-10, owned by a company in Luxembourg. And if all goes well, the satellite will eventually make its way to a high orbit of 35,000 km (22,000 miles) and deliver broadcasting and television services to Latin America.
For all intents and purposes, this is an absolutely normal, routine, and maybe even boring event in the space industry. Another chemical rocket blasted off another communications satellite to join the thousands of satellites that have come before.
Of course, as you probably know, this wasn’t a routine launch. It was the first step in one of the most important achievements in space flight – launch reusability. This was the second time the 14-story Falcon 9 rocket had lifted off and pushed a payload into orbit. Not Falcon 9s in general, but this specific rocket was reused.
In a previous life, this booster blasted off on April 8, 2016 carrying CRS-8, SpaceX’s 8th resupply mission to the International Space Station. The rocket launched from Florida’s Cape Canaveral, released its payload, re-entered the atmosphere and returned to a floating robotic barge in the Atlantic Ocean called Of Course I Still Love You. That’s a reference to an amazing series of books by Iain M. Banks.
Why is this such an amazing accomplishment? What does the future hold for reusability? And who else is working on this?
Developing a rocket that could be reused has been one of the holy grails of the space industry, and yet, many considered it an engineering accomplishment that could never be achieved. Trust me, people have tried in the past.
Portions of the space shuttle were reused – the orbiter and the solid rocket boosters. And a few decades ago, NASA tried to develop the X-33 as a single stage reusable rocket, but ultimately canceled the program.
To reuse a rocket makes total sense. It’s not like you throw out your car when you return from a road trip. You don’t destroy your transatlantic airliner when you arrive in Europe. You check it out, do a little maintenance, refuel it, fill it with passengers and then fly it again.
According to SpaceX founder Elon Musk, a brand new Falcon 9 first stage costs about $30 million. If you could perform maintenance, and then refill it with fuel, you’d bring down subsequent launches to a few hundred thousand dollars.
SpaceX is still working out what a “flight-tested” launch will cost on a reused Falcon 9 will cost, but it should turn into a significant discount on SpaceX’s already aggressive prices. If other launch providers think they’re getting undercut today, just wait until SpaceX really gets cranking with these reused rockets.
For most kinds of equipment, you want them to have been re-used many times. Cars need to be taken to the test track, airplanes are flown on many flights before passengers ever climb inside. SpaceX will have an opportunity to test out each rocket many times, figuring out where they fail, and then re-engineering those components. This makes for more durable and safer launch hardware, which I suspect is the actual goal here – safety, not cost.
In addition to the first stage, SpaceX also re-used the satellite fairing. This is the covering that makes the payload more aerodynamic while the rocket moves through the lower atmosphere. The fairing is usually ejected and burns up on re-entry, but SpaceX has figured out how to recover that too, saving a few more million.
SpaceX’s goals are even more ambitious. In addition to the first stage booster and launch fairing, SpaceX is looking to reuse the second stage booster. This is a much more complicated challenge, because the second stage is going much faster and needs to lose a lot more velocity. In late 2014, they put their plans on hold for a second stage reuse.
SpaceX’s next big milestone will be to decrease the reuse time. From almost a year to under 24 hours.
Sometime this year, SpaceX is expected to do the first launch of the Falcon Heavy. A launch system that looks like it’s made up of 3 Falcon-9 rockets bolted together. Since that’s basically what it is.
The center booster is a reinforced Falcon-9, with two additional Falcon-9s as strap-on boosters. Once the Falcon Heavy lifts off, the three boosters will detach and will individually land back on Earth, ready for reassembly and reuse. This system will be capable of carrying 54,000 kilograms into low Earth orbit. In addition, SpaceX is hoping to take the technology one more step and have the upper stage return to Earth.
Imagine it. Three boosters and upper stage and payload fairing all returning to Earth and getting reused.
And waiting in the wings, of course, is SpaceX’s huge Interplanetary Transport System, announced by Elon Musk in September of 2016. The super-heavy lift vehicle will be capable of carrying 300,000 kilograms into low Earth orbit.
For comparison, the Apollo era Saturn V could carry 140,000 kg into low Earth orbit, so this thing will be much much bigger. But unlike the Saturn V, it’ll be capable of returning to Earth, and landing on its launch pad, ready for reuse.
SpaceX just crossed a milestone, but they’re not the only player in this field.
Perhaps the biggest competitor to SpaceX comes from another internet entrepreneur: Amazon’s Jeff Bezos, the 2nd richest man in the world after Bill Gates. Bezos founded his own rocket company, Blue Origin in Seattle, which had been working in relative obscurity for the last decade. But in the last few years, they demonstrated their technology for reusable rocket flight, and laid out their plans for competing with SpaceX.
In April 2015, Blue Origin launched their New Shepard rocket on a suborbital trajectory. It went up to an altitude of about 100 km, and then came back down and landed on its launch pad again. It made a second flight in November 2015, a third flight in April 2016, and a fourth flight in June 2016.
That does sound exciting, but keep in mind that reaching 100 km in altitude requires vastly less energy than what the Spacex Falcon 9 requires. Suborbital and orbital are two totally milestones. The New Shepard will be used to carry paying tourists to the edge of space, where they can float around weightlessly in the vomit of the other passengers.
But Blue Origin isn’t done. In September 2016, they announced their plans for the follow-on New Glenn rocket. And this will compete head to head with SpaceX. Scheduled to launch by 2020, like, within 3 years or so, the New Glenn will be an absolute monster, capable of carrying 45,000 kilograms of cargo into low Earth orbit. This will be comparable to SpaceX’s Falcon Heavy or NASA’s Space Launch System.
Like the Falcon 9, the New Glenn will return to its launch pad, ready for a planned reuse of 100 flights.
A decade ago, the established United Launch Alliance – a consortium of Boeing and Lockheed-Martin – was firmly in the camp of disposable launch systems, but even they’re coming around to the competition from SpaceX. In 2014, they began an alliance with Blue Origin to develop the Vulcan rocket.
The Vulcan will be more of a traditional rocket, but some of its engines will detach in mid-flight, re-enter the Earth’s atmosphere, deploy parachutes and be recaptured by helicopters as they’re returning to the Earth. Since the engines are the most expensive part of the rocket, this will provide some cost savings.
There’s another level of reusability that’s still in the realm of science fiction: single stage to orbit. That’s where a rocket blasts off, flies to space, returns to Earth, refuels and does it all over again. There are some companies working on this, but it’ll be the topic for another episode.
Now that SpaceX has successfully launched a first stage booster for the second time, this is going to become the new normal. The rocket companies are going to be fine tuning their designs, focusing on efficiency, reliability, and turnaround time.
These changes will bring down the costs of launching payloads to orbit. That’ll mean it’s possible to launch satellites that were too expensive in the past. New scientific platforms, communications systems, and even human flights become more reasonable and commonplace.
Of course, we still need to take everything with a grain of salt. Most of what I talked about is still under development. That said, SpaceX just reused a rocket. They took a rocket that already launched a satellite, and used it to launch another satellite.
It’s a pretty exciting time, and I can’t wait to see what happens next.
Now you know how I feel about this accomplishment, I’d like to hear your thoughts. Do you think we’re at the edge of a whole new era in space exploration, or is this more of the same? Let me know your thoughts in the comments.
We’re always talking about Mars here on the Guide to Space. And with good reason. Mars is awesome, and there’s a fleet of spacecraft orbiting, probing and crawling around the surface of Mars.
The Red Planet is the focus of so much of our attention because it’s reasonably close and offers humanity a viable place for a second home. Well, not exactly viable, but with the right technology and techniques, we might be able to make a sustainable civilization there.
We have the surface of Mars mapped in great detail, and we know what it looks like from the surface.
But there’s another planet we need to keep in mind: Venus. It’s bigger, and closer than Mars. And sure, it’s a hellish deathscape that would kill you in moments if you ever set foot on it, but it’s still pretty interesting and mysterious to visit.
Would it surprise you to know that many spacecraft have actually made it down to the surface of Venus, and photographed the place from the ground? It was an amazing feat of Soviet engineering, and there are some new technologies in the works that might help us get back, and explore it longer.
Today, let’s talk about the Soviet Venera program. The first time humanity saw Venus from its surface.
Back in the 60s, in the height of the cold war, the Americans and the Soviets were racing to be the first to explore the Solar System. First satellite to orbit Earth (Soviets), first human to orbit Earth (Soviets), first flyby and landing on the Moon (Soviets), first flyby of Mars (Americans), first flyby of Venus (Americans), etc.
The Soviets set their sights on putting a lander down on the surface of Venus. But as we know, this planet has some unique challenges. Every place on the entire planet measures the same 462 degrees C (or 864 F).
Furthermore, the atmospheric pressure on the surface of Venus is 90 times greater than Earth. Being down at the bottom of that column of atmosphere is the same as being beneath a kilometer of ocean on Earth. Remember those submarine movies where they dive too deep and get crushed like a soda can?
Finally, it rains sulphuric acid. I mean, that’s really irritating.
Needless to say, figuring this out took the Soviets a few tries.
Their first attempts to even flyby Venus was Venera 1, on February 4, 1961. But it failed to even escape Earth orbit. This was followed by Venera 2, launched on November 12, 1965, but it went off course just after launch.
Venera 3 blasted off on November 16, 1965, and was intended to land on the surface of Venus. The Soviets lost communication with the spacecraft, but it’s believed it did actually crash land on Venus. So I guess that was the first successful “landing” on Venus?
Before I continue, I’d like to talk a little bit about landing on planets. As we’ve discussed in the past, landing on Mars is really really hard. The atmosphere is thick enough that spacecraft will burn up if you aim directly for the surface, but it’s not thick enough to let you use parachutes to gently land on the surface.
Landing on the surface of Venus on the other hand, is super easy. The atmosphere is so thick that you can use parachutes no problem. If you can get on target and deploy a parachute capable of handling the terrible environment, your soft landing is pretty much assured. Surviving down there is another story, but we’ll get to that.
Venera 4 came next, launched on June 12, 1967. The Soviet scientists had few clues about what the surface of Venus was actually like. They didn’t know the atmospheric pressure, guessing it might be a little higher pressure than Earth, or maybe it was hundreds of times our pressure. It was tested with high temperatures, and brutal deceleration. They thought they’d built this thing plenty tough.
Venera 4 arrived at Venus on October 18, 1967, and tried to survive a landing. Temperatures on its heat shield were clocked at 11,000 C, and it experienced 300 Gs of deceleration.
The initial temperature 52 km was a nice 33C, but then as it descended down towards the surface, temperatures increased to 262 C. And then, they lost contact with the probe, killed dead by the horrible temperature.
We can assume it landed, though, and for the first time, scientists caught a glimpse of just how bad it is down there on the surface of Venus.
Venera 5 was launched on January 5, 1969, and was built tougher, learning from the lessons of Venera 4. It also made it into Venus’ atmosphere, returned some interested science about the planet and then died before it reached the surface.
Venera 6 followed, same deal. Built tougher, died in the atmosphere, returned some useful science.
Venera 7 was built with a full understanding of how bad it was down there on Venus. It launched on August 17, 1970, and arrived in December. It’s believed that the parachutes on the spacecraft only partially deployed, allowing it to descend more quickly through the Venusian atmosphere than originally planned. It smacked into the surface going about 16.5 m/s, but amazingly, it survived, and continued to send back a weak signal to Earth for about 23 minutes.
For the first time ever, a spacecraft had made it down to the surface of Venus and communicated its status. I’m sure it was just 23 minutes of robotic screaming, but still, progress. Scientists got their first accurate measurement of the temperatures, and pressure down there.
Bottom line, humans could never survive on the surface of Venus.
Venera 8 blasted off for Venus on March 17, 1972, and the Soviet engineers built it to survive the descent and landing as long as possible. It made it through the atmosphere, landed on the surface, and returned data for about 50 minutes. It didn’t have a camera, but it did have a light sensor, which told scientists being on Venus was kind of like Earth on an overcast day. Enough light to take pictures… next time.
For their next missions, the Soviets went back to the drawing board and built entirely new landing craft. Built big, heavy and tough, designed to get to the surface of Venus and survive long enough to send back data and pictures.
Venera 9 was launched on June 8, 1975. It survived the atmospheric descent and landed on the surface of Venus. The lander was built like a liquid cooled reverse insulated pressure vessel, using circulating fluid to keep the electronics cooled as long as possible. In this case, that was 53 minutes. Venera 9 measured clouds of acid, bromine and other toxic chemicals, and sent back grainy black and white television pictures from the surface of Venus.
In fact, these were the first pictures ever taken from the surface of another planet.
Venera 10 lasted for 65 minutes and took pictures of the surface with one camera. The lens cap on a second camera didn’t release. The spacecraft saw lava rocks with layers of other rocks in between. Similar environments that you might see here on Earth.
Venera 11 was launched on September 9, 1975 and lasted for 95 minutes on the surface of Venus. In addition to confirming the horrible environment discovered by the other landers, Venera 11 detected lightning strikes in the vicinity. It was equipped with a color camera, but again, the lens cap failed to deploy for it or the black and white camera. So it failed to send any pictures home.
Venera 12 was launched on September 14, 1978, and made it down to the surface of Venus. It lasted 110 minutes and returned detailed information about the chemical composition of the atmosphere. Unfortunately, both its camera lens caps failed to deploy, so no pictures were returned. And pictures are what we really care about, right?
Venera 13 was built on the same tougher, beefier design, and was blasted off to Venus on October 30, 1981, and this one was a tremendous success. It landed on Venus and survived for 127 minutes. It took pictures of its surroundings using two cameras peering through quartz windows, and saw a landscape of bedrock. It used spring-loaded arms to test out how compressible the soil was.
Venera 14 was identical and launched just 5 days after Venera 13. It also landed and survived for 57 minutes. Unfortunately, its experiment to test the compressibility of the soil was a botch because one of its lens caps landed right under its spring-loaded arm. But apart from that, it sent back color pictures of the hellish landscape.
And with that, the Soviet Venus landing program ended. And since then, no additional spacecraft have ever returned to the surface of Venus.
It’s one thing for a lander to make it to the surface of Venus, last a few minutes and then die from the horrible environment. What we really want is some kind of rover, like Curiosity, which would last on the surface of Venus for weeks, months or even years and do more science.
And computers don’t like this kind of heat. Go ahead, put your computer in the oven and set it to 850. Oh, your oven doesn’t go to 850, that’s fine, because it would be insane. Seriously, don’t do that, it would be bad.
Engineers at NASA’s Glenn Research Center have developed a new kind of electrical circuitry that might be able to handle those kinds of temperatures. Their new circuits were tested in the Glenn Extreme Environments Rig, which can simulate the surface of Venus. It can mimic the temperature, pressure and even the chemistry of Venus’ atmosphere.
The circuitry, originally designed for hot jet engines, lasted for 521 hours, functioning perfectly. If all goes well, future Venus rovers could be developed to survive on the surface of Venus without needing the complex and short lived cooling systems.
This discovery might unleash a whole new era of exploration of Venus, to confirm once and for all that it really does suck.
While the Soviets had a tough time with Mars, they really nailed it with Venus. You can see how they built and launched spacecraft after spacecraft, sticking with this challenge until they got the pictures and data they were looking for. I really think this series is one of the triumphs of robotic space exploration, and I look forward to future mission concepts to pick up where the Soviets left off.
Are you excited about the prospects of exploring Venus with rovers? Let me know your thoughts in the comments.
Looking for great holiday gifts for that special someone who is interested in space and the stars? Two writers for Universe Today have you covered whether it’s exploration of the Solar System or learning what to look for in the night sky.
Universe Today’s Contributing Editor Nancy Atkinson shares the insights of over 35 NASA scientists and engineers in her new book “Incredible Stories from Space.” And if that gives you the itch to go outside and look up, be sure to get a copy of Bob King’s “Night Sky with the Naked Eye” to help you explore space from your own backyard.
In “Incredible Stories from Space: A Behind-the-Scenes Look at the Missions Changing our View of the Cosmos” Nancy takes readers inside the robotic space missions that are transforming our understanding of the solar system and beyond.
Weaving together one-on-one interviews along with the extraordinary sagas of missions, this book provides a detailed look at both current and future unmanned missions. It chronicles the struggles and triumphs of nine current spacecraft and captures the true spirit of exploration and discovery. Full color images throughout reveal scientific discoveries and the stunning, breathtaking views of our universe, sent back to Earth by our robotic emissaries to the cosmos.
From the first-ever mission to Pluto to the unprecedented hunt for planets outside our solar system, readers will journey along with missions like New Horizons, Kepler, the Curiosity Mars rover, and the iconic Hubble Space Telescope as they unlock the mysteries of the universe. Learn more about the latest findings in our solar system with the Cassini mission to Saturn, Dawn’s visit to the asteroid belt, the Solar Dynamics Observatory, and the Mars and Lunar Reconnaissance Orbiters. Explore the future of space exploration with a preview of upcoming missions.
Over the next couple of weeks, Nancy will be sharing “writing-of” stories and other insights garnered during her interviews and travels for the book. Also look for a preview of one chapter here on Universe Today during the week of Dec. 19.
“Night Sky with the Naked Eye: How to Find Planets, Constellations, Satellites and Other Night Sky Wonders without a Telescope” will help you gain a deeper appreciation of the universe and our place in it while advancing your knowledge of the night sky.
Bob lays out a series of activities that are fun and educational while teaching you how to spot the International Space Station, follow the moon through its phases, forecast an aurora and watch a meteor shower along with traditional night sky activities like identifying the planets, stars and constellations. Unique illustrations and stunning photos help the reader understand the concepts presented.
Bob also shows readers how to use a smart phone, the Internet and other resources to enhance time spent under the stars, making this a truly modern and updated night sky book. Many people curious about the night sky think you need expensive equipment to enjoy it. You don’t. This book shows how we can learn a lot about the universe and deepen our appreciation of its beauty using nothing more than our eyeballs.
Both books were published by Page Street Publishing, a subsidiary of Macmillan. They are available at Amazon, Barnes & Noble and IndiBound (links below, with great discounts available at this time!) While Nancy’s book doesn’t come out until Dec. 20, its available for pre-order with delivery on the 20th, just in time for the holidays.