Some planets don’t orbit stars. They were kicked into space long ago. The newest, smallest one found is only about as massive as Earth.
Searching through data from NASA’s K2 Mission, researchers found a new planet. Some call it K2-315b, others smile and refer to it as “Pi Earth.”
This is the first time that scientists have seen hints of these weird side effects of lightning storms somewhere other than on Earth.
The new observations were made by a telescope on board a jet in Earth’s atmosphere. They confirm the presence of water on sunlit areas of the moon.
Traveling to Mars offers many challenges, including life without gravity, cosmic rays and communication delays.
Gravity is a fundamental force that attracts objects with mass to other objects with mass. It decreases with distance.
Space robots can take pictures of other planets, analyze samples of their surface and even peer into their interiors.
Suspicious spots around the moon’s middle could be the beds of ancient lakes. If so, this might solve a 20-year-old mystery.
Exoplanets are planets outside of our solar system. Scientists are finding out more about them than ever before.