NASA

The James Webb Space Telescope will let scientists study small, rocky planets around distant stars in more detail than ever before. After decades of work, it could head into orbit later this year.

In April, NASA chose Elon Musk's SpaceX to receive a highly sought-after $2.9 billion contract. It would involve the first spacecraft to land humans on the moon since 1972.

NASA's Juno spacecraft traveled to 645 miles above the surface of the solar system's largest moon, Ganymede, on Monday.

The animals are being launched into the cosmos as NASA researchers attempt to learn more about how the conditions of spaceflight can affect biological organisms and, by extension, future astronauts.

The company's third crewed spacecraft took off from Florida early Friday.

Fresh off the first powered flight on another world, NASA's Mars 2020 mission has managed another key first that could pave the way for future astronauts.

Jet Propulsion Laboratory project manager MiMi Aung gave an enthusiastic two thumbs-up and then clenched fists before a roomful of engineers erupted in applause.

Nelson, who spent six days in orbit aboard the space shuttle Columbia in 1986, would succeed Trump-era Administrator Jim Bridenstine.

NASA is counting down to what should be the final major test of the massive rocket it is building to put the first woman and the next man on the moon.

Nuclear rocket technology might be the fastest, safest way to get to the red planet. But if NASA wants to go, it should start development now.