Four small planets discovered around one of the closest stars to Earth—an expert explains what we know
Barnard's Star is a small, dim star of the type that astronomers call red dwarfs. Consequently, even though it is one of the ...
Live Science13d
Earth: Facts about the Blue Planet
Earth is our home planet, and it's the only place in the universe where we know for certain that life exists. Earth formed over 4.5 billion years ago from a swirling cloud of gas and dust squished ...
USA Today20d
A seven-planet alignment happens in late-February, but it could be tricky to see it
When is the 7 planet alignment? Mercury to join in late-February. Mars, Jupiter and Saturn are frequently seen in the night sky. But because Venus and Mercury orbit closer to the sun than Earth ...
Space.com29d
Scientists accidentally discover Earth's inner core is less solid than expected
The new research could help us better understand our planet's thermal and magnetic fields. For a long time, scientists thought the Earth's inner core was a solid ball of metal, sort of like a ...
WVEC20d
Planet revolutions and why the Earth needs leap years
Each planet in our solar system takes a different amount of time to complete one orbit around the sun. For example, Mercury, being closest to the sun, takes just 88 Earth days to complete one orbit.