Mars hoax e-mails have been passed on to countless people who haven't been able to resist forwarding it to their entire address book. In some cases, the message has been turned into a full-blown PowerPoint presentation.
This is a composite image of the active galaxy M82 from infrared observations by Spitzer Space Telecope in three wavelength bands coded in red (longest wavelength), green, and blue (shortest wavelengths).
The claim is that Mars will appear so large in the sky on Friday that it will look as if Earth has two moons. But the planet will appear as a mere pinprick of light, not a moonlike orb.
A team of astronomers say they have found a solar system that includes at least five Neptune-like planets – all within the equivalent of Mars's orbit. There might be two other planets, as well, including the smallest exoplanet yet found.
Cloudless skies allowed a clear view of dust and hydrogen sulfide plumes along the coast of Namibia in early August 2010. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this natural-color image on Aug. 10. Multiple dust plumes blow off the coast toward the ocean, most or all of them probably arising from streambeds. Unlike the reddish-tan sands comprising the dunes directly south of the Kuiseb River, the stream-channel sediments are lighter in color.
At least five planets circle the star HD 10180 in regular orbits, some 127 light years away. This new star system could set the extrasolar record for most known planets.
If there are organic materials on Mars, odds are that the planet's mud volcanoes are where to find it, say scientists.
Star Wars fans want NASA to develop faster-than-light travel, so that humans can visit other star systems. After all, in the 'Star Wars' universe, the technology was developed a long time ago, in a galaxy far away.
This is an artist's concept depicting a possible scene when the first human travelers might walk on the surface of Mars. The artwork was part of a NASA new initiatives study which surveyed possible future manned planetary expeditionary activity.