In a recent study published in Instrumentation and Methods for Astrophysics, the private space company, Rocket Lab, outlines a plan to send their high-energy Photon spacecraft to Venus in May 2023 with the primary goal of searching for life within the Venusian atmosphere. The planet Venus has become a recent hot topic in the field of astrobiology, which makes the high-energy Photon mission that much more exciting.
Rocket Lab hopes to build off their recent successful launch of the CAPSTONE mission using its Photon satellite bus, and consists of a CubeSat designed to study the near rectilinear halo orbit (NRHO) around the Moon and its applications for long-term missions such as Gateway.
The James Webb Space Telescope (JWST) continues to both dazzle and amaze with its latest image, this time of Galaxy IC 5332, also known as PGC 71775, which is an intermediate spiral galaxy located approximately 30 million light years away. This comes after JWST released its first images at its full power, which includes the Carina Nebula, Stephan’s Quintet, Southern Ring Nebula, and SMACS 0723, the last of which was the deepest and sharpest image of the distant universe to date.
An early NASA concept of an interstellar space probe. Credit: NASA/Johns Hopkins University Applied Physics Laboratory
The future can arrive in sudden bursts. What seems a long way off can suddenly jump into view, especially when technology is involved. That might be true of self-replicating machines. Will we combine 3D printing with in-situ resource utilization to build self-replicating space probes?
One aerospace engineer with expertise in space robotics thinks it could happen sooner rather than later. And that has implications for SETI.
Our Moon is a fascinating world that has captivated us since time immemorial. Long before the first telescope was invented, ancient humans used the Moon as a calendar in the sky, with evidence that lunar timekeeping was around as early as 25,000, 30,000, and even 35,000 years before the present. Long before humanity had written language, lived in organized cities, and worshipped structured religions, the Moon was one of humanity’s first timepieces. It wasn’t until the telescope was invented that our Moon became an object of scientific curiosity, with the sketches by Galileo Galilei giving us a new perspective on our nearest celestial neighbor. As science advanced, so did our understanding of the Moon. While the Apollo missions were successful in teaching us about the geology of the Moon, it wasn’t until 2009 when the LCROSS impact probe onboard the Lunar Reconnaissance Orbiter deliberately crashed into a dark crater on the Moon’s south pole and detected 155 kilograms of water as it flew through the ejecta plume before ultimately crashing into the lunar surface.
A pulsar with its magnetic field lines illustrated. The beams emitting from the poles are what washes over our detectors as the dead star spins.
A team of researchers at the University of Illinois Urbana-Champaign have found a way for travelers through the Solar System to work out exactly where they are, without needing help from ground-based observers on Earth. They have refined the pulsar navigation technique, which uses X-ray signals from distant pulsars, in a way similar to how GPS uses signals from a constellation of specialized satellites, to calculate an exact position .
Gravity is good for a lot of things. It brings objects closer together. Occasionally they crash into each other. But sometimes two objects get locked in a unique gravitational dance that pairs them together. That dance can be short-lived, or it can last for billions of years. In some cases the objects are large (i.e. planets and moons), but they can also be quite small.
These small dancing objects are called binary asteroids, and we know very little about them, despite making up approximately 15% of all asteroids in the solar system. That is until a newly greenlighted NASA mission, called Janus, will arrive at two different binary asteroids around 2026.
An artist's illustration of a pressurized lunar vehicle. Image Credit: JAXA/Toyota
JAXA, the Japan Aerospace Exploration Agency, is teaming up with the nation’s largest company to build a lunar rover. Toyota, the second largest automobile company in the world (only Volkswagen makes more cars) has signed a development deal with JAXA that will last three years. The goal? To design, build, test and evaluate prototypes for a pressurized, crewed lunar vehicle that runs on fuel-cells.
LightSail 2 captured this image of Mexico on July 12th, 2019. The image is looking east across Mexico. The tip of the Baja Peninsula is on the left, and on the far right is Tropical Storm Barry. Image Credit: The Planetary Society
LightSail 2 has successfully deployed its solar sails. Shortly after 12:00 pm PST The Planetary Society tweeted that the sails were deployed, and that the spacecraft was sailing with sunlight. We can all enjoy their success and start to wonder how solar sails will fit into humanity’s plans for space exploration.
Update: This article has been updated with new images from LightSail2.
The planet Venus, as imaged by the Magellan 10 mission. The planet's inhospitable surface makes exploration extremely difficult. Credit: NASA/JPL
Venus is often described as being hell itself, because of its crushing pressure, acidic atmosphere, and extremely high temperatures. Dealing with any one of these is a significant challenge when it comes to exploring Venus. Dealing with all three is extremely daunting, as the Soviet Union discovered with their Venera landers.
Actually, dealing with the sulphuric rain is not too difficult, but the heat and the pressure on the surface of Venus are huge hurdles to exploring the planet. NASA has been working on the Venus problem, trying to develop electronics that can survive long enough to do useful science. And it looks like they’re making huge progress.
Scientists at the NASA Glenn Research Centre have demonstrated electronic circuitry that should help open up the surface of Venus to exploration.
The first color pictures taken of the surface of Venus by the Venera-13 space probe. The Venera 13 probe lasted only 127 minutes before succumbing to Venus’s extreme surface environment. Credit: NASA
“With further technology development, such electronics could drastically improve Venus lander designs and mission concepts, enabling the first long-duration missions to the surface of Venus,” said Phil Neudeck, lead electronics engineer for this work.
With our current technology, landers can only withstand surface conditions on Venus for a few hours. You can’t do much science in a few hours, especially when weighed against the mission cost. So increasing the survivability of a Venus lander is crucial.
With a temperature of 460 degrees Celsius (860 degrees Fahrenheit), Venus is almost twice as hot as most ovens. It’s hot enough to melt lead, in fact. Not only that, but the surface pressure on Venus is about 90 times greater than Earth’s, because the atmosphere is so dense.
To protect the electronics on previous Venus landers, they have been contained inside special vessels designed to withstand the pressure and temperature. But these vessels add a lot of mass to the mission, and make sending landers to Venus a very expensive proposition. So NASA’s work on robust electronics is super important when it comes to exploring Venus.
The team at the Glenn Research Centre has developed silicon carbide semiconductor integrated circuits (Si C IC) that are extremely robust. Two of the circuits were tested inside a special chamber designed to precisely reproduce the conditions on Venus. This chamber is called the Glenn Extreme Environments Rig (GEER.)
The GEER (Glenn Extreme Environments Rig) facility can recreate the conditions of any body in our Solar System. (No, not the Sun, obviously.) Image: NASA/Glenn Research Centre
GEER is a special chamber that can recreate the conditions on any body in our Solar System. It’s an 800 Litre (28 cubic foot) chamber that can simulate temperatures up to 500° C (932° F), and pressures from near-vacuum to over 90 times the surface pressure of Earth. GEER can also simulate exotic atmospheres with its precision gas-mixing capabilities. It can mix very specific quantities of gases down to parts per million accuracy. For these tests, that means the unit had to reproduce an accurate recipe of CO2, N2, SO2, HF, HCl, CO, OCS, H2S, and H2O, down to very tiny quantities. And the tests were a success.
“We demonstrated vastly longer electrical operation with chips directly exposed — no cooling and no protective chip packaging — to a high-fidelity physical and chemical reproduction of Venus’ surface atmosphere,” Neudeck said. “And both integrated circuits still worked after the end of the test.”
In fact, the two circuits not only functioned after the test was completed, but they withstood Venus-like conditions for 521 hours. That’s more than 100 times longer than previous demonstrations of electronics designed for Venus missions.
A before (top) and after (bottom) image of the electronics after being tested in Venus atmospheric conditions. Image: NASA
The circuits themselves were originally designed to operate in the extremely high temperatures inside aircraft engines. “This work not only enables the potential for new science in extended Venus surface and other planetary exploration, but it also has potentially significant impact for a range of Earth relevant applications, such as in aircraft engines to enable new capabilities, improve operations, and reduce emissions,” said Gary Hunter, principle investigator for Venus surface electronics development.”
The chips themselves were very simple. They weren’t prototypes of any specific electronics that would be equipped on a Venus lander. What these tests showed is that the new Silicon Carbide Integrated Circuits (Si C IC) can withstand the conditions on Venus.
A host of other challenges remains when it comes to the overall success of a Venus lander. All of the equipment that has to operate there, like sensors, drills, and atmospheric samplers, still has to survive the thermal expansion from exposure to extremely high temperature. Robust new designs will be required in many cases. But this successful test of electronics that can survive without bulky, heavy, protective enclosures is definitely a leap forward.
If you’re interested in what a Venus lander might look like, check out the Venus Sail Rover concept.
SpaceX ASDS drone ship with the recovered Falcon 9 first stage rocket lurking off Port Canaveral waiting to enter the port. Copyright: Julian Leek
Recovered Falcon 9 first stage after drone ship landing following SpaceX launch of JCSAT-14 on May 6, 2016 from Space Launch Complex 40 at Cape Canaveral Air Force Station, Fl. Credit: SpaceX
The SpaceX Falcon 9 first stage booster that successfully launched a Japanese satellite to a Geostationary Transfer Orbit (GTO) just 3 days ago and then nailed a safe middle of the night touchdown on a drone ship at sea minutes minutes later, is headed back to port and may arrive overnight or soon thereafter.
The 156 foot tall booster was spotted offshore earlier today while being towed back to her home port at Port Canaveral, Florida.
The SpaceX ASDS drone ship with the recovered Falcon 9 first stage rocket is lurking off Port Canaveral waiting to enter the port until after the cruise ships depart for safety reasons. Pictured above at 7:40 a.m.
The upgraded SpaceX Falcon 9 soared to orbit on May 6, roaring to life with 1.5 million pounds of thrust on a mission carrying the JCSAT-14 commercial communications satellite, following an on time liftoff at 1:21 a.m. EDT from Space Launch Complex 40 at Cape Canaveral Air Force Station, Fl.
To date SpaceX has recovered 3 Falcon 9 first stages. But this was the first one to be recovered from the much more demanding, high velocity trajectory delivering a satellite to GTO.
“First landed booster from a GTO-class mission (final spacecraft altitude will be about 36,000 km),” tweeted SpaceX CEO and founder Elon Musk.
Musk was clearly ecstatic with the result, since SpaceX officials had been openly doubtful of a successful outcome with the landing.
Barely nine minutes after liftoff the Falcon 9 first stage carried out a propulsive soft landing on an ocean going platform located some 400 miles off the east coast of Florida.
The drone ship was named “Of Course I Still Love You.”
The Falcon 9 landed dead center in the bullseye.
Check out the incredible views herein from SpaceX of the Falcon 9 sailing serenely atop the “Of Course I Still Love You.”
Base of Recovered Falcon 9 first stage with landing legs after drone ship landing following SpaceX launch of JCSAT-14 on May 6, 2016 from Space Launch Complex 40 at Cape Canaveral Air Force Station, Fl. Credit: SpaceX
Relive the launch through these pair of videos from remote video cameras set at the SpaceX launch pad 40 facility.
Video caption: SpaceX Falcon 9 launch of JCSAT-14 on May 6, 2016 from Space Launch Complex 40 at Cape Canaveral Air Force Station, Fl. Credit: Ken Kremer/kenkremer.com
Video caption: SpaceX Falcon 9 launch of JCSAT-14 on 5/6/2016 Pad 40 CCAFS. Credit: Jeff Seibert/AmericaSpace
The commercial SpaceX launch lofted the JCSAT-14 Japanese communications satellite to a Geostationary Transfer Orbit (GTO) for SKY Perfect JSAT – a leading satellite operator in the Asia – Pacific region.
The landing counts as nother stunning success for Elon Musk’s vision of radically slashing the cost of sending rocket to space by recovering the boosters and eventually reusing them.
Recovered Falcon 9 first stage stands upright after drone ship landing following SpaceX launch of JCSAT-14 on May 6, 2016 from Space Launch Complex 40 at Cape Canaveral Air Force Station, Fl. Credit: SpaceX
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
Launch of SpaceX Falcon 9 carrying JCSAT-14 Japanese communications satellite to orbit on May 6, 2016 at 1:21 a.m. EDT from Space Launch Complex 40 at Cape Canaveral Air Force Station, Fl. Credit: Julian Leek
