Real Mars research at the end of the world.
The end of the world serves as host to an international group of researchers trying to understand Mars’ Poles.
Category: space
Billions of years ago, Mars could have been a planet very like Earth with copious liquid water on its surface. But over time, that water rose into Mars’s thin atmosphere and evaporated off into space. There are only very small amounts of water vapor left in the atmosphere today, and a new study shows that vapor is being lost even faster than previously believed.
The research, published in the journal Science, used data from the Trace Gas Orbiter in orbit around Mars to see how water moved up and down through the layers of the Martian atmosphere in order to understand how fast it evaporates away. They found that the vapor changes through the seasons and that in the warmer months the atmosphere hosts a whole lot more water than expected, in a state called “supersaturation.”
When the atmosphere becomes supersaturated, this makes the evaporation of water happen even faster. “Unconstrained by saturation, the water vapor globally penetrates through the cloud level, regardless of the dust distribution, facilitating the loss of water to space,” the authors explain. Even when the density of dust or ice particles in the atmosphere changes, that still doesn’t stop supersaturation, so the evaporation of water continues at a brisk pace.
Vera Rubin Gets a Telescope of Her Own
Posted in space
The astronomer missed her Nobel Prize. But she now has a whole new observatory to her name.
Assigned to study how two stars would cross paths creating an eclipse, he focused on the solar system TOI 1338, where he noticed something in the orbit of two stars that was blocking the light.
His bosses spent several weeks verifying his observation, and ultimately concluded that Cukier had discovered a planet 6.9 times larger than Earth and only the 13th planet of its kind ever discovered.
“I was looking through the data for everything the volunteers had flagged as an eclipsing binary, a system where two stars circle around each other and from our view eclipse each other every orbit,” Cukier said, according to a NASA press release.
By Donna Lu
A trippy maths program that visualises the inside of strange 3D spaces could help us figure out the shape of the universe.
Henry Segerman at Oklahoma State University and his colleagues have been working to interactively map the inside of mathematical spaces known as 3-manifolds using a program called SnapPy.
Stephen Hawking passed away on 14 March 2018. His work changed literally everything we know about the cosmos and our place in it. But his greatest contribution to our species wasn’t his theories on black holes or how quickly the universe was expanding, it was his humanity.
Professor Hawking was born on 8 January 1942. He would have been 78 years old today – a bit older than ‘boomer’ age, his generation was called the “Silent” one. In his early twenties he was diagnosed with Lou Gehrig’s disease (ALS). Eventually he became paralyzed and could only speak with the assistance a computer-generated audio device.
Combining Maxar’s capabilities in robotics, spacecraft and space systems operations creates the opportunity to deploy and maintain revolutionary new space architectures. Since the dawn of space exploration, pioneers in the field envisioned sustainable space stations enabled by in-space assembly, manufacturing and servicing. Wernher Von Braun conducted a detailed study in 1945 that defined the deployment and construction of the rotating wheel space station. The design included maintaining artificial gravity and oxygen levels. Today, NASA has led the construction and continuous operation of the International Space Station for over 20 years, demonstrating the technical feasibility of large-scale in-space assembly and servicing.
Recently, Maxar has been working with NASA on concepts for both human-tended and uncrewed sustainable space platforms. These in-space assembled structures provide basic functions and a modular interface for new and evolving payloads and missions. The lunar orbiting Gateway will be one such platform where the Maxar-developed Power and Propulsion Element will provide the foundation of power, maneuvering, communications systems and initial docking capabilities. Additional Gateway segments will plug-in to the Power and Propulsion Element to make use of these systems. The versatility of the Power and Propulsion Element also allows it to be refueled in orbit, and we are working with NASA to conceive the architecture that could resupply the Gateway with fuel and other essentials.
Another concept we’ve been developing with NASA is an uncrewed “science station” that is constructed in sun synchronous LEO orbit and features science instruments that are robotically installed, upgraded, and replaced over time. This allows for co-location of science instruments, which is often desired or necessary, while eliminating the need to budget for, develop, integrate and launch all the payloads simultaneously on a single launch.
A new fast radio burst is traced to its home galaxy and leaves astronomers scratching their heads.
Many times now, I have pointed out that the use of Killer Robots should be a war crime. It might not be a theoretical occurrence anymore.
“Syrian Kurds are asking the Pentagon to block US-controlled air space over north-eastern Syria to Turkish armed drones which they claim are causing significant civilian casualties.”
Unmanned weapons ‘targeting anything they wish to’ as Kurds say Turks have killed 509 civilians and 412 troops.
For the first time, the agency’s Transiting Exoplanet Survey Satellite (TESS) has discovered a roughly Earth- planet in the habitable zone of its host star, the zone of orbital distances where liquid water could be stable on a world’s surface.
NASA’s TESS Planet Hunter Finds Its 1st Earth-Size World in ‘Habitable Zone’ : Read more
Interesting, perhaps pushing the paradigm limits here. 86% of solar energy is similar to Precambrian earth during the Faint Young Sun, a snow ball earth. Part of the report that is a bit confusing to me is the comment “One of the other planets is a red dwarf about 40% as massive, 40% as wide and 50% as hot as Earth’s sun.” I think this is about the host star being a red dwarf star. Red dwarfs can be flaring stars and cause problems for *habitable* exoplanets. The Sun spins about 2 km/s at the its equator, red dwarf stars can spin faster like 4 km/s or faster, rotation periods 1 day to 10 days so red dwarfs can emit more flares. The report does comment “In 11 months of data, we saw no flares from the star, which improves the chances TOI 700 d is habitable and makes it easier to model its atmospheric and surface conditions,” discovery team leader Emily Gilbert, a graduate student at the University of Chicago, said in the same statement.