NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.

Asteroids and comets – and the meteors that sometimes come from them – are leftovers from the formation of our solar system 4.6 billion years ago.

NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.

Discovery Comet C/1995 O1 (Hale-Bopp) was discovered in July 23, 1995, independently, by both Alan Hale and Thomas Bopp. Hale-Bopp was discovered at the amazing distance of 7.15 AU. One AU is …

Discovery Comet Giacobini-Zinner was discovered on Dec. 20, 1900 by Michel Giacobini at the Nice Observatory in France. The comet was later recovered by Ernst Zinner in 1913 (October 23). …

Curiosity’s Mission: Was Mars Ever Habitable? Part of NASA’s Mars Science Laboratory mission, Curiosity is the largest and most capable rover ever sent to Mars. Curiosity’s mission is to answer the …

Oct 21, 2025 · NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.

N00138403.jpg was taken on 2009-07-08 15:26 (PDT) and received on Earth 2009-07-09 19:43 (PDT). The camera was pointing toward Titan, and the image was taken using the CL1 and MT1 filters. This …

Oct 21, 2025 · Raw images are photos from space missions that NASA provides online for easy public access in their original (usually monochrome) appearance, largely untouched by image processing …

The Psyche spacecraft acquired this image using its Multispectral Imager Camera B and the Blue filter (495).