In May of 2019, SpaceX began launching its Starlink constellation with the launch of its first 60 satellites. To date, the company has launched over 800 satellites and (as of this summer) is producing them at a rate of about 120 a month. By late 2021 or 2022, Elon Musk hopes to have a constellation of 1,440 satellites providing near-global service and perhaps as many as 42,000 providing internet to the entire planet before the decade is out.
As of November 2020, SpaceX has invited participants to take part in a public beta test called “Better Than Nothing.” The service, aptly named, is providing users with a modest rate of between 50 to 150 megabits per second, a far cry from the gigabit download speeds at low latency they hope to offer. But perhaps more interesting is the small item in the terms of service, where participants must acknowledge that Mars is a “free planet.”
Continue reading “One of the Terms of Service For Starlink is that You “Recognize Mars as a Free Planet””
When human beings start living in space for extended periods of time they will need to be as self-sufficient as possible. The same holds true for settlements built on the Moon, on Mars, and other bodies in the Solar System. To avoid being entirely dependent on resupply missions from Earth (which is costly and time-consuming) the inhabitants will need to harvest resources locally – aka. In-Situ Resource Utilization (ISRU).
This means they’ll have to procure their own sources of water, building materials, and grow their own food. While the ISS has allowed for all kinds of experiments involving hydroponics in space, little has been done to see how soil fares in microgravity (or lower gravity). To address this, Morgan Irons – Chief Science Officer of the Virginia-based startup Deep Space Ecology (DSE) – recently sent her Soil Health in Space experiment to the ISS.
Continue reading “What Martian Settlers Need to Know About Soil Can Teach us How to Grow Better on Earth”
In four years, NASA plans to return astronauts to the Moon as part of Project Artemis. To ensure the success of this endeavor, as well as the creation of a program of sustainable lunar exploration by the end of the decade, NASA has partnered with multiple entities in the commercial space sector. Recently, they announced that contracts will be awarded to 14 additional companies to develop a range of proposed technologies.
These proposals are part of NASA’s fifth competitive Tipping Point solicitation, one of many private-public partnership programs overseen by NASA’s Space Technology Mission Directorate (STMD). For this latest solicitation, Tipping Point is awarding contracts with a combined value of over $370 million for technology demonstrations that will facilitate future lunar missions and commercial space capabilities.
Continue reading “NASA Announces 14 New “Tipping Point” Technologies for its Lunar Exploration”
It’s hard to deny that we’re heading for a future with a human presence on Mars. But to develop sustained presence, there are an enormous number of technical problems to be worked out. One of those problems concerns manufacturing and building.
We can’t send everything people will need to Mars. We’ll need some way to build structures, and tools and other things.
Continue reading “Chitin Could be the Perfect Building Material on Mars”
On Friday, Sept. 4th, China launched a new and mysterious spacecraft from the Jiuquan Satellite Launch Center. The nature (and even appearance) of the spacecraft remains unknown, but according to statements made by Chinese authorities, it’s a reusable spaceplane. This vehicle is essentially China’s answer to the USAF/USSF X-37B Orbital Test Vehicle (OTV), which made its sixth launch to space (OTV-6) back in late-May.
Continue reading “China’s New Reusable Spaceplane Lands After 2 Days in Space”
Satellite engineers know what every photographer knows: get close to your subject to get better pictures. Not just visible light pictures, but all across the spectrum. The lower altitude also improves things like radar, lidar, communications, and gps.
But when your subject is Earth, and Earth is surrounded by an atmosphere, getting closer is a delicate dance with physics. The closer a satellite gets to Earth, the more atmospheric drag it encounters. And that can mean an unscheduled plummet to destruction for Earth-Observing (EO) satellites.
Continue reading “Earth Observation Satellites Could be Flown Much Lower than Current Altitudes and Do Better Science”
The United States and Russia/USSR have been adversaries for a long time. Their heated rivarly stretches back to the waning days of WW2, when the enormous Red Army was occupying large swathes of eastern Europe, and the allies recognized the inherent threat.
The Cold War followed, when the two nations aimed an absurd number of nuclear warheads at each other. Then came the Space Race, when both nations vied for the prestige of making it to the Moon.
The US won that race, but the rivalry didn’t cool down.
Continue reading “Russia Just Tested an Anti-Satellite Weapon”
Like all other technologies, satellite technology has grown in leaps and bounds in the past couple decades. Satellites can monitor Earth in increasingly high resolutions, aiding everything from storm forecasting, to climate change monitoring, to predicting crop harvests. But there’s one thing still holding satellites back: altitude.
Continue reading “This is What an Air-Breathing Electric Thruster’s Intake Would Look Like”
Any mission to Mars requires deeper planning than missions to the ISS or the Moon. Based purely on the length of the mission, contingencies branch outwards in complex logistical pathways. What if there’s an accident? What if someone’s appendix bursts?
And what if surgery is needed?
Continue reading “How Would We Do Surgery in Space?”
Today, there is no shortage of people who want to see humans go to Mars in their lifetime. Moreover, many want to go there themselves, and some even want to stay! It goes without saying that this proposed endeavor presents all kinds of challenges (the word Herculean comes to mind!) This is especially true when it comes to feeding future missions to Mars, not to mention permanent residents.
Regular resupply missions to Mars are simply not feasible, which means astronauts and settlers will have to grow their own food. To inspire ideas for how this could be done, and what the resulting meals would be like, Vera Mulyani and the organization she founded (Mars City Design) created the Martian Feast Gala. This annual event showcases what a Martian Menu could consist of and illustrates how every challenge is an opportunity to get creative!
Continue reading “Behold! The Martian Menu, Courtesy of Mars City Design!”