How Old Is the Solar System, and How Did It Form?
Earth, between sweltering Venus and frozen Mars, formed and orbits within a band where water could persist in solid, liquid, and gaseous phases. Mars had surface water, but not as much as Earth, and ...
A Giant Leap for Astronomy: Telescope for NASA’s Roman Mission Complete
NASA's Roman Space Telescope has received its Optical Telescope Assembly, paving the way for its mission to explore the ...
Solar Breakthrough: Scientists Redefine the Sun’s Elemental Blueprint
Solar and cosmochemical data indicate high levels of carbon, nitrogen, and oxygen in the Sun. Researchers have unveiled a new ...