About 4.5 billion years ago, the solar system was just a giant, spinning cloud of gas and dust. Today, it's flat. Here's how that happened.
These planets are mostly made of gas, but a spaceship would have a rough time trying to get through a giant planet like Jupiter or Saturn.
The private sector wants to bring nuclear power to space to enable faster and more efficient space travel.
Space Force vice commander Lt. Gen. David Thompson urges Americans to better understand the need to be prepared for military actions in space.
Commercial launch leaders are optimistic that the industry will survive the current outbreak of coronavirus.
SpaceX CEO Elon Musk says humanity needs a "whole new architecture" to fly in space beyond low Earth orbit.
Private companies have plans to foster a new age of sustainable space travel. Their first stop? The moon.
House Science Committee staff members insist that their bill does not preclude NASA's lunar exploration goals. Others feel differently.
The science gear will fly aboard robotic landers built by two private companies: Pittsburgh's Astrobotic and Houston's Intuitive Machines.
Perseus is one of the largest constellations and is home to one of the most famous stars in our sky.
It's been a great, enormous storm for more than a 100 years. But will Jupiter's Great Red Spot last much longer?
Are you worried about the sun suddenly blinking out? Never fear — our star still has billions of years left to shine.
NASA’s future flagship telescope, WFIRST, will help us find potentially habitable exoplanets and study a mysterious phenomenon called dark matter.