Knowtex

As part of the NASA Open Government plan released on April 7 2010, Nasa announced more than 150 milestones related to integrating Open Government into the agencies programs and projects.

Neil Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, has died at the age of 82. "That is one small step for (a) man, one giant leap for mankind"

This view of the landscape to the north of NASA's Mars rover Curiosity was acquired by the Mars Hand Lens Imager (MAHLI) on the afternoon of the first day after landing.

Team members share the challenges of Curiosity's final minutes to landing on the surface of Mars.

In celebration of the twenty-firstt anniversary of the Hubble Space Telescope's deployment in April 2011, astronomers at the Space Telescope Science Institute pointed Hubble's eye to an especially photogenic group of interacting galaxies called Arp 273.

Interactive timeline documenting NASA's 50 year evolution.

The countdown clock is one of the most-watched timepieces in the world. On this page, you'll learn how the countdown operates, and what milestones to watch for during our live launch coverage.

"This is the first step in creating a totally new space communications capability, an interplanetary Internet," said Adrian Hooke, team lead and manager of space-networking architecture, technology and standards at NASA Headquarters in Washington.

Watch, download or share the latest NASA videos, including launches and landings, mission operations, science updates and animations.

The Solar and Heliospheric Observatory spots its 2000th comet: More than any comet-hunter in history.