Our Home Planet Earth is an ocean planet. Our home world's abundance of water -- and life -- makes it unique in our solar system. Other planets, plus a few moons, have ice, atmospheres, seasons and even weather, but only on Earth does the whole complicated mix come together in a way that encourages life -- and lots of it.
Bright Explosion on the Moon
NASA researchers who monitor the Moon for meteoroid impacts have detected an explosion ten times brighter than anything they've seen before.
Regenerative Fuel Cells, Energy Storage Systems for Space Applications
This talk provides an introduction to fuel cells and regenerative fuel cell systems. It also highlights the features of this technology for enabling future NASA missions to the moon, near-Earth asteroids and Mars.
Prime Time for PANSTARRS
This week is prime time for observing this comet. (Next opportunity, the year 108,013 +/- a few hundred or thousand years.)
Record Setting Asteroid Flyby
On Feb. 15th an asteroid about half the size of a football field will fly past Earth closer than many man-made satellites. Since regular sky surveys began in the 1990s, astronomers have never seen an object so big come so close to our planet.
Comet of the Century?
Later this year, "Comet ISON" could blossom into a striking naked eye object visible even in broad daylight.
Earth at Perihelion
In January, our planet made its annual closest approach to the sun. But don't expect things to warm up.
ISS Transit of Venus
High above Earth, astronaut Don Pettit is preparing to photograph the June 5th Transit of Venus from space itself. The Expedition 31 crew will be the first people in history to see a Venus transit from space.
A New Count of Potentially Hazardous Asteroids
Observations from NASA's Wide-field Infrared Survey Explorer (WISE) have led to the best assessment yet of our solar system's population of potentially hazardous asteroids.
Bright Explosion on the Moon
NASA researchers who monitor the Moon for meteoroid impacts have detected an explosion ten times brighter than anything they've seen before.
Regenerative Fuel Cells, Energy Storage Systems for Space Applications
This talk provides an introduction to fuel cells and regenerative fuel cell systems. It also highlights the features of this technology for enabling future NASA missions to the moon, near-Earth asteroids and Mars.
Prime Time for PANSTARRS
This week is prime time for observing this comet. (Next opportunity, the year 108,013 +/- a few hundred or thousand years.)
Record Setting Asteroid Flyby
On Feb. 15th an asteroid about half the size of a football field will fly past Earth closer than many man-made satellites. Since regular sky surveys began in the 1990s, astronomers have never seen an object so big come so close to our planet.
Comet of the Century?
Later this year, "Comet ISON" could blossom into a striking naked eye object visible even in broad daylight.
Earth at Perihelion
In January, our planet made its annual closest approach to the sun. But don't expect things to warm up.
ISS Transit of Venus
High above Earth, astronaut Don Pettit is preparing to photograph the June 5th Transit of Venus from space itself. The Expedition 31 crew will be the first people in history to see a Venus transit from space.
A New Count of Potentially Hazardous Asteroids
Observations from NASA's Wide-field Infrared Survey Explorer (WISE) have led to the best assessment yet of our solar system's population of potentially hazardous asteroids.