Study unveils volcanic history and clues to ancient life on Mars

In a study co-authored by a Texas A&M University scientist, researchers have revealed new insights into the geological history of Mars’s Jezero Crater, the landing site of NASA’s Perseverance rover. Their findings suggest that the crater’s floor is composed of a diverse array of iron-rich volcanic rocks, providing a window into the planet’s distant past and the closest chance yet to uncover signs of ancient life.

Saturday Citations: An exoplanetary biosignature; the diplomacy of body odor; personalities of bees

This week, the Curiosity rover found large carbon deposits on Mars, suggesting an ancient carbon cycle. Researchers exploring the domestication of cats believe they may have originally pounced out of Tunisia. And researchers in Michigan report that during the shift of Earth’s magnetic pole 41,000 years ago, Homo sapiens may have protected themselves from harmful solar radiation with technologies including clothing, shelter and prehistoric sunscreen.

Lichens can survive almost anything, and some might survive Mars

Whether anything ever lived on Mars is unknown. And the present environment, with harsh temperatures, intense radiation, and a sparse atmosphere, isn’t exactly propitious for life. Despite the red planet’s brutality, lichens that inhabit some of the harshest environments on Earth could possibly survive there. Lichens are symbionts, or two organisms that are in a cooperative relationship. There is a fungal component (most are about 90 percent fungus) and a photosynthetic component (algae or cyanobacteria). Continue ReadingLichens can survive almost anything, and some might survive Mars

Scintillating star trails

Huang Dandan/Liu Dongyu, taken from Town, Xilin Gol League, Inner Mongolia, China The stars spin above the north-south-aligned antennas of the Interplanetary Scintillation Observation (IPS) Telescope, China’s first radio telescope for studying interplanetary scintillation. This stacked image was captured with a Sony mirrorless camera and 14mm lens, with 15-second exposures at f/3.2 and ISO 5000. The post Scintillating star trails appeared first on Astronomy Magazine. Continue ReadingScintillating star trails

A New Concept for an Astrobiology Mission to Enceladus

Astrobiologists are dying to send another mission to study Enceladus, the icy moon that orbits Saturn and has active plumes emanating from its surface, A team from NASA’s Jet Propulsion Laboratory (JPL) proposes an Enceladus Orbitlander that would conduct in-situ measurements of Enceladus’ plumes, which could confirm the presence of organics and maybe even life in its interior.

What Blew Up the Local Bubble?

In our neighborhood of the Milky Way, we see a region surrounding the solar system that is far less dense than average. But that space, that cavity, is a very irregular, elongated shape. What little material is left inside of this cavity is insanely hot, as it has a temperature of around a million Kelvin.

‘Take care of our station. It’s our everything.’ Russian cosmonaut hands control of ISS over to Japanese astronaut (video)

Russia’s Alexey Ovchinin handed the keys of the International Space Station to Japanese spaceflyer Takuya Onishi in a change-of-command ceremony today (April 18). Continue Reading‘Take care of our station. It’s our everything.’ Russian cosmonaut hands control of ISS over to Japanese astronaut (video)