A proposed Mars helicopter mission would search for signs of life, water and future human footholds in a vast volcanic canyon network.

Last time we learned about Mars' great Valles Marineris, the largest canyon in the solar system. But what about here on Earth, is the Grand Canyon really the biggest? A stunning reversal of ...

See the 2,500 mile-long (4000 km) Valles Marineris in imagery captured the Mars Reconnaissance Orbiter. Global topography: NASA/GSFC CTX global mosaic: NASA/MSSS/Caltech/ CTX topography ...

Hubble’s 35-year journey showcases humanity’s boldest space achievements, capturing everything from new stars forming to ...

UNLV geoscientist Arya Udry shares what motivates her in studying space, her work on the Mars Perseverance mission, and the world of knowledge a meteorite can bring.

On April 24, 1990, the Space Shuttle Discovery blasted off from Kennedy Space Center, carrying the new Hubble Space Telescope ...

In celebration of the Hubble Space Telescope’s 35 years in Earth orbit, an assortment of images that were recently taken by ...

Everest above sea level. Valles Marineris, Mars’ 2,500-mile-long canyon system, is a dark, linear, horizontal feature near center left," NASA said. "In the right image, high-altitude evening ...

Jupiter is the largest planet in the solar system. It's about 11 times wider than Earth with an equatorial diameter of 88,846 ...

This image, a mosaic of 102 Viking Orbiter photos from July 9, 2013, shows Mars' Valles Marineris, a canyon system over 2,000 km long and 8 km deep. This image, taken in 2016, shows Curiosity at the ...