4 Tiny Planets Found Orbiting Barnard’s Star

Our quest to find a “second Earth” has long occupied scientists and dreamers alike. The possibility of another world ...
Led by Curtin University geologists Chris Kirkland and Tim Johnson, a research team unearthed this primeval crater beneath ...
A new world has just been found orbiting a Sun-like star only 20 light-years away, and it could be one of the most promising ...
The rate of stars going supernova near Earth appears to match two mass extinctions -- 372 million years ago and 445 million ...
For a long time, scientists thought the Earth's inner core was a solid ball of metal, sort of like a planet within a planet ...
Scientists with a new theory about how Earth’s early continents formed predicted where a superold impact crater should ...
Living organisms need nitrogen as a central building block for protein formation, for example. However, although our ...
The Archean Eon (4–2.5 million years ago) is the second of Earth’s four major geologic eons, a time when the planet was mostly covered by oceans extending far deeper than those found today.