NASA Spaceline Current Awareness List — grok via Astrobiology.com SPACELINE Current Awareness Lists are distributed via listserv and are available on the NASA Task Book website at https://taskbook.nasaprs.com/tbp/spaceline.cfm. Please send any correspondence
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
The Aurora Australis, photographed over Concordia station in July 2025, during the ongoing solar activity maximum, the peak of the Sun’s 11-year cycle. ESA – Larger image This dazzling light
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
