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Zhurong rover rolls onto Martian surface a week after landing

HELSINKI — China’s Zhurong rover descended onto the surface of Mars late May 21, a week after the vehicle’s historic landing in Utopia Planitia.

The China National Space Administration (CNSA) announced Saturday that the six-wheeled Zhurong had reached the surface at 10:20 p.m. Eastern Friday.

The rover will now begin science and exploration tasks in Utopia Planitia with six science payloads, including optical and multispectral cameras and ground-penetrating radar.

Larger Rocky Planets Might be Rare Because They Shrunk

Researchers at the Flatiron Institute’s Center for Computational Astrophysics published a paper last week that just might explain a mysterious gap in planet sizes beyond our solar system. Planets between 1.5 and 2 times Earth’s radius are strikingly rare. This new research suggests that the reason might be because planets slightly larger than this, called mini-Neptunes, lose their atmospheres over time, shrinking to become ‘super-Earths’ only slightly larger than our home planet. These changing planets only briefly have a radius the right size to fill the gap, quickly shrinking beyond it. The implication for planetary science is exciting, as it affirms that planets are not static objects, but evolving and dynamic worlds.

Exoplanet research is a very young field. As recently as 1992, no one had ever seen a planet beyond our solar system. Today, we’ve discovered more than 4700 of them, and that number is growing rapidly due to the efforts of dedicated planet-hunting space telescopes like Kepler (now defunct) and its successor, TESS. We’ve suddenly gained an enormous new sample size of planets to study, beyond the eight planets (sorry Pluto) that orbit around our sun.

Kepler, TESS, and other planet hunters have discovered brand new types of planets, like so-called ‘hot-Jupiters,’ large gas giants that orbit very close to their star. These were among the first exoplanets observed because their large size made them easy to find, and their small, fast orbital periods meant we could see them pass in front of their star more than once in a short period of time (some hot-Jupiters have a year that lasts only a few Earth days).

Space Tourism Is Getting Cheaper, But Oxygen Isn’t Guaranteed

Technology around space travel is accelerating at a rapid pace. As a result, we may soon see a future where one doesn’t need to be an astronaut to travel the stars. But there’s a long line of legal and safety logistics to be met before we can all start booking our personal space voyages.

#Space #Accelerate #BloombergQuicktake.

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There are no shortcuts when you build a drone destined for Mars

“Never, never ask me for a shortcut.” her mom said while she was growing up.

MiMi Aung (born 1968) is a Burmese 🇲🇲 American engineer and project manager at Jet Propulsion Laboratory (JPL).

She is the lead engineer on the Mars Helicopter Ingenuity, the first extraterrestrial aircraft which landed on Mars today.

She was inspired by her mother to study science, maths and engineering. Her mother was the first woman in Myanmar to get a PhD in mathematics.

She tested the technology she and her colleagues developed for seven years at NASA.

Mars’ atmosphere is a lot thinner than Earth’s. This means to keep the helicopter in the air, the blades must spin very fast and it can’t weigh more than 2 kilograms.

Ingenuity’s mission on Mars is to help Perseverance find the best routes around Mars.

Samples of an Asteroid are Headed Back to Earth on This Week @NASA – May 14, 2021

It’s been a busy week!

🚀 Samples of a 4.5-billion-year asteroid head to Earth on our #OSIRISRex mission.
🔭 NASA’s James Webb Space Telescope checks off a key prelaunch milestone.
⛈️ Scientists develop a way to view satellite data in 3D to gain a better understanding of severe weather.

Watch This Week at NASA for details on these stories and more: youtu.be/mplLzUMYKuM

Proxima Centauri b: Artificial Illumination as a Technosignature

Our recent look at the possibility of technosignatures at Alpha Centauri is now supplemented with a new study on the detectability of artificial lights on Proxima Centauri b. The planet is in the habitable zone, roughly similar in mass to the Earth, and of course, it orbits the nearest star, making it a world we can hope to learn a great deal more about as new instruments come online. The James Webb Space Telescope is certainly one of these, but the new work also points to LUVOIR (Large UV/Optical/IR Surveyor), a multi-wavelength space-based observatory with possible launch in 2035.

Authors Elisa Tabor (Stanford University) and Avi Loeb (Harvard) point out that a (presumably) tidally locked planet with a permanent nightside would need artificial lighting to support a technological culture. As we saw in Brian Lacki’s presentation at Breakthrough Discuss (see Alpha Centauri and the Search for Technosignatures), coincident epochs for civilizations developing around neighboring stars are highly unlikely, making this the longest of longshots. On the other hand, a civilization arising elsewhere could be detectable through its artifacts on worlds it has chosen to study.

We learn by asking questions and looking at data. In this case, asking how we would detect artificial light on Proxima b involves factoring in the planet’s radius, which is on the order of 1.3 Earth radii (1.3 R) as well as that of Proxima Centauri itself, which is 0.14 that of the Sun (0.14 R). We also know the planet is in an 11 day orbit at 0.05 AU. Other factors influencing its lightcurve would be its albedo and orbital inclination. Tabor and Loeb use recent work on Proxima Centauri c’s inclination (citation below) to ballpark an orbital inclination for the inner world.

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