Trans-Neptunian objects (TNOs) are icy bodies that vary widely in size, from large dwarf planets like Pluto and Eris—each ...

NASA is a methodical institution that plans its missions years or even decades in advance, enjoys a famously loyal workforce ...

ESA's Solar Orbiter captured views of the planet Mercury passing in front of the Sun. Multiple instruments aboard the spacecraft captured the imagery. Credit: Space.com | footage & orbit animation cou ...

After the space agency canceled its VIPER rover, an empty space was available on a private spacecraft that will still head to ...

To get somewhere in outer space, you can’t exactly drive in a straight line. Orbits are tricky things, and sending a probe to ...

An asteroid that could level a city now has a 3.1 percent chance of striking Earth in 2032, according to NASA data released ...

Two American astronauts who have been trapped on the International Space Station since June could return to Earth earlier in ...

The Mercury Exploration Assessment Group (MExAG ... NASA's budget is also likely to be significantly cut. Space industry officials are concerned that the NASA budget, which amounts to about $25 ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. NASA on Tuesday ...

8 Mercury is the closest planet to the sun ... day launch window that opens no earlier than Feb. 26. Another spacecraft, NASA's Lunar Trailblazer, will also hitch a ride on this flight.