Explore decades of incredible images and videos of stars, planets, moons, and galaxies—most of which are free to use and share.

For the closest thing to spending a year on Mars, without leaving Earth, look no further than Houston. NASA has opened recruitment for the Moon and Mars Exploration Analog (MMEA), a yearlong

A team of astronomers has discovered that the spiral arms of the Milky Way galaxy may stretch further out into space than was previously known. The scientists made precise distance measurements of dust clouds in the arms using data from two telescopes orbiting high above Earth’s atmosphere — NASA’s Chandra,

NASA has received one of the most unusual-looking pieces of hardware ever associated with the Artemis III program, and despite its striking resemblance to a classic flying saucer, its mission is entirely grounded in engineering.

NASA is attempting a daring rescue mission to save a failing satellite falling back down to earth. The Swift telescope has been in orbit for about 20 years but is currently plummeting down to earth.

NASA is marking the United States' 250th birthday with four striking red, white, and blue images of deep space from the Chandra X-ray Observatory. The collection features an exploded star, a stellar nursery,

In honor of the Fourth of July, NASA has released a patriotic collection of images that also comes with data-centered audio

The spacecraft has been in LA since 2012, but now it's moving to a new permanent home at the California Science Center.