Coming this month: Closest Known Approach by a Lar

2005 YU-55 is going to make a very close approach to the Earth on the night of November 8, 2011. At that time, its distance from Earth will be just [...]

Space Shuttle An Idea Born in Unsettled Times

NASA video narrated by William Shatner, the HD 720p version. An idea born in unsettled times becomes a feat of engineering excellence, the most complex machine ever built, to bring [...]

The Asteroid that Flattened Mars

In 1080p. Did Mars long ago develop far enough for life to arise? If so, does anything still live within Mars’ dusty plains, beneath its ice caps, or somewhere underground? [...]

Mapping the History of Space & Time

From the latest EsoCast, with Dr. J. as host. The longer a telescope spends looking at a target, the more sensitive the observations become, and the deeper we can look [...]

Craters Reveal the Moon’s Turbulent Early History

New results from NASA’s Lunar Reconnaissance Orbiter showing the ages of craters on the moon. The larger the crater, the older it is. This shows that the moon was bombarded [...]