For decades, scientists treated the end of Earth’s habitability as a problem for the far future, measured in several billion ...
When astronomers announced Kepler-452b, they were not just adding another distant world to a growing catalog. They were ...
The object dubbed Earth's "second moon" is actually a quasi-satellite that's accompanied the planet since 1957 — not a true ...
NASA research using Apollo lunar regolith data refines the Moon’s impact record and places limits on meteorite contributions to Earth’s water over geologic time.