Astrobiology187- Page

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

Map of Laoshan pipe. It is an oval-shaped pipe measuring 1000 m in length and 600 m in width. — IOCAS Hydrogen-producing hydrothermal systems in the deep ocean are rare

In a new study, researchers from Penn State and NASA’s Jet Propulsion Laboratory analyzed human deep space communications and found that human transmissions are frequently directed toward our own spacecrafts

(left) Electromagnetic model showing the suppression of AKR and Earth transmitters on the far side of the Moon (Bassett et al. 2020). (Right) Eight candidate sites on the farside identified