How great are wheels, really? Wheels need axles. Suspension. Power of some kind. And roads, or at least swaths of relatively flat and stable terrain. Then you need to maintain all of it. Because of their cost many civilizations across human history, who knew all about wheels and axles, didn’t bother using them for transportation. Another way to look at it – much of human technology mimics nature. Of the simple machines, levers, inclined planes, wedges, and even screws are observed in nature. Why not the wheel?
Continue reading “Robots Might Jump Around to Explore the Moon”Watch a Nicely Stabilized Video of DART Flying Past Didymos and Slamming Into Dimorphos
Here’s one of the best videos we’ve seen of the last minutes of the Double Asteroid Redirection Test (DART) mission as it headed towards and slammed into the asteroid Dimorphos. This stabilized version of the last five-and-a-half minutes of images leading up to DART’s intentional collision with the asteroid was produced from NASA’s DART images. It was produced by the YouTube channel Spei’s Space News from Germany.
Continue reading “Watch a Nicely Stabilized Video of DART Flying Past Didymos and Slamming Into Dimorphos”This is the Last Thing DART saw as it Smashed Into its Asteroid Target
The first-ever planetary defense technology demonstration mission successfully conducted its mission, slamming into the surface of a distant asteroid and going out in a blaze of glory. NASA’s Double Asteroid Redirection Test (DART) spacecraft acted as a kinetic impactor, colliding with the small and harmless asteroid Dimorphos on September 26 at 7:14PM ET, with the hope of deflecting it.
Continue reading “This is the Last Thing DART saw as it Smashed Into its Asteroid Target”Socks, The Final Frontier
What is the greatest challenge facing humans as we prepare for the first crewed missions to Mars? Solar and cosmic radiation? Atrophying bone and muscle? Growing food? How about laundry? It’s strange but true, right now we don’t have a way to clean laundry in space.
Continue reading “Socks, The Final Frontier”Want to Live on Mars? Here's Where the Water is
When crewed missions begin to travel to Mars for the first time, they will need to be as self-sufficient as possible. Even when Mars and Earth are at the closest points in their orbits to each other every 26 months (known as “Opposition“), it can take six to nine months for a spacecraft to travel there. This makes resupply missions painfully impractical and means astronauts must pack plenty of supplies for the journey. They will also need to grow some of their food and leverage local resources to meet their needs, a process known as In-Situ Resource Utilization (ISRU).
In particular, astronauts will need to know where to find water on the Red Planet, which is no small challenge. Luckily, the European Space Agency (ESA) has created a mineral map showing the locations of aqueous minerals (rocks that have been chemically altered by water). This map was created by the Mars Orbital Catalog of Aqueous Alteration Signatures (MOCAAS) project and took over ten years to complete. When it comes time to select landing sites for crewed missions to Mars (in the next decade and beyond), maps like this will come in mighty handy!
Continue reading “Want to Live on Mars? Here's Where the Water is”South Korea’s First Orbital Mission to the Moon is on its Way
South Korea launched its first robotic mission to the Moon last week, as a SpaceX Falcon 9 successfully launched the Danuri Lunar Pathfinder mission on August 4, 2022 from Florida’s Cape Canaveral Space Force Station.
The spacecraft was placed into a fuel-saving lunar transfer orbit, and it should arrive in lunar orbit in December.
Translated, Danuri means “enjoy the Moon.”
Continue reading “South Korea’s First Orbital Mission to the Moon is on its Way”ESA’s EnVision Mission Doesn’t Have a lot of Fuel, so it’s Going to Aerobrake in the Atmosphere of Venus
Venus has almost been “the forgotten planet,” with only one space mission going there in the past 30 years. But the recent resurgence of interest in Earth’s closest neighbor has NASA and ESA committing to three new missions to Venus, all due to launch by the early 2030s.
ESA’s EnVision mission Venus is slated to take high-resolution optical, spectral and radar images of the planet’s surface. But to do so, the van-sized spacecraft will need to perform a special maneuver called aerobraking to gradually slow down and lower its orbit through the planet’s hot, thick atmosphere. Aerobraking uses atmospheric drag to slow down a spacecraft and EnVision will make thousands of passages through Venus’ atmosphere for about two years.
Continue reading “ESA’s EnVision Mission Doesn’t Have a lot of Fuel, so it’s Going to Aerobrake in the Atmosphere of Venus”Uh Oh, NASA is Reviewing Psyche and May Terminate the Mission
NASA is reviewing its mission to visit the asteroid 16 Psyche. The Administration has convened a 15-member review board to examine the mission and its failure to meet the scheduled 2022 launch. The review began on July 19, and the board will present their findings to NASA and JPL in late September.
Continue reading “Uh Oh, NASA is Reviewing Psyche and May Terminate the Mission”A New Method for Making Graphene has an Awesome Application: A Space Elevator!
The Space Elevator is one of those ideas that seems to have an endless supply of lives. Originally proposed about a century ago, this concept calls for a tether of supermaterial that connects a station in orbit to Earth’s surface. Our planet’s rotation would keep this tether taut, and a system of “climbers” would transport people and payloads to and from space. The engineering challenges and costs associated with such a structure have always been enormous. But every generation or so, new research comes along that causes engineers and space agencies to reevaluate the concept.
The single-greatest challenge has always been the tether since no known material has ever been strong enough to handle the stresses involved. But as it turns out, this issue may finally be resolved! According to scientists with the International Space Elevator Consortium (ISEC), a cost-effective manufacturing process could produce graphene ribbons that are strong enough to fashion a tether! Their latest findings are detailed in a paper they will present at the upcoming 2022 International Astronomical Congress in Paris.
Continue reading “A New Method for Making Graphene has an Awesome Application: A Space Elevator!”Two Spacecraft Could Work Together to Capture an Asteroid and Bring it Close to Earth for Mining
Humanity seems destined to expand into the Solar System. What exactly that looks like, and how difficult and tumultuous the endeavour might be, is wide open to speculation. But there are some undeniable facts attached to the prospect.
We need materials to build infrastructure, and getting it all into space from Earth is not realistic. (Be quiet, space elevator people.)
Continue reading “Two Spacecraft Could Work Together to Capture an Asteroid and Bring it Close to Earth for Mining”