Astrobiology40- Page

Air sampling during a dust storm. Credit: Naama Lang-Yona How do living bacteria survive on the surface of dust particles carried by desert storms from the Sahara and Egypt to

A scanning electron microscope image of a micrometeorite impact crater in a particle of asteroid Bennu material. Credit NASA Asteroid Bennu — the target of NASA’s OSIRIS-REx sample return mission,

Snapshot of the triple transit of planet b, c, and d as seen by K2 at the end of 2016. This artistic representation has been created with the software tango

Results from the injection-recovery test for the helium envelope with a variable opacity. The top panel shows the inputted absorbance profiles (red curves), together with the empirically-retrieved absorbance profiles (red

Fractional abundances of PAHs as a function of the number of carbon atoms 𝑁C. Dotted lines denote the estimated abundance upper limits of large quasi-symmetric PAHs in NGC 7027, and

SPHEREx 3.0/4.26/4.7 μm H2O/CO2/CO gas coma from left to right respectively. The object is undetected in H2O and CO, with 2-pixel radius preliminary conservative upper limits of 0.45 and 0.99

Possible interior compositions of 55 Cnc e. Compositions consistent within the 1σ, 2σ, and 3σ M-R uncertainties are shown in orange, dark teal, and light teal, respectively. The red dashed

Cartoon showing different components of a protostellar system. The ices are thought to form in layers with different molecules at different temperatures and densities (see review by Herbst and van