May 13, 2005: Friday the 13th is supposed to be an unlucky day, the sort of day you trip on your shoe laces or lose your wallet or get bad news.
But maybe it's not so bad. Consider this: On April 13th--Friday the 13th--2029, millions of people are going to go outside, look up and marvel at their good luck. A point of light will be gliding across the sky, faster than many satellites, brighter than most stars.
What's so lucky about that? It's asteroid 2004 MN4 ... not hitting Earth.
For a while astronomers thought it might. On Christmas Eve 2004, Paul Chodas, Steve Chesley and Don Yeomans at NASA's Near Earth Object Program office calculated a 1-in-60 chance that 2004 MN4 would collide with Earth. Impact date: April 13, 2029.
The HD-Vis camera developed by NASA's Ames Research Center that is mounted on the belly of NASA's Global Hawk Earth science aircraft took this photo of cloud formations over the North Pacific Ocean on April 7, 2010. The wide-angle image from the HD-Vis camera was taken as the autonomously operated aircraft flew at 58,000 feet altitude on the outbound leg of its first data collection flight in the Global Hawk Pacific (GloPac) environmental science campaign. The forward fuselage and inner portions of the wings of the aircraft are visible at the top of the photo.
The giant elliptical galaxy NGC 5128, show here in visible light, hosts the radio source known as Centaurus A. Located 12 million light-years away, it is one of the closest active galaxies.
In the desert of southwest Peru, between the Andes Mountains and the Peruvian coast, lies a plateau with huge geometric patterns and spirals, animal figures including a monkey, a spider, and an 'owl man,' and thousands of perfectly straight lines. The last of these was drawn about a thousand years ago. Known as the Nazca lines, the drawings have mystified scientists since they were first discovered in the 1920s. Pictured here is all that can be seen of these lines by Landsat 7's 15 meter pan band, which has been used to sharpen the 30 meter Bands 3, 2, and 1.