Superflares Might Have Protected the Early Earth
Our Sun can flare up from time to time, but probably nothing like the superflares it created in its early…
Spinning Hyperion
NASA's Cassini spacecraft took this photograph of Saturn's chaotic, tumbling moon Hyperion. Only 266 km (165 miles) across, Hyperion one…
What’s Up This Week – May 9 – May 15, 2005
Greetings, fellow SkyWatchers! We'll begin the week with a challenging unaided eye observation and head out to deep space as…
Crater Holden and Uzboi Vallis on Mars
The European Space Agency's Mars Express took this image of 140-km (87 mile) Crater Holden on the surface of Mars.…
Deployment of Second MARSIS Boom Delayed
Controllers with the European Space Agency have deployed the first of Mars Express' MARSIS radar booms. During the operation, however,…
Did Phoebe Come from the Outer Solar System?
Saturn's moon Phoebe might have arrived at the planet after a long journey from the outer Solar System, according to…
Mars Polar Lander Found?
Scientists analyzing images taken by the Mars Global Surveyor think they might have located the Mars Polar Lander spacecraft, which…
Plankton Bloom in the Bay of Biscay
The European Space Agency's Envisat satellite snapped this picture of a marine phytoplankton bloom forming off the coast of Spain,…
Solar Minimum Doesn’t Mean a Calm Sun
Our star goes through an 11-year cycle of solar activity. At the recent height of the cycle, the Sun blasted…
More Sunlight is Hitting the Earth
The amount of sunlight reaching the Earth's surface has been on the rise for the past decade on average, potentially…