NASA astronaut Don Pettit recently uploaded a gallery of photos to the Johnson Space Center’s Flickr page. Pettit on how he captured these amazing images:
“My star trail images are made by taking a time exposure of about 10 to 15 minutes. However, with modern digital cameras, 30 seconds is about the longest exposure possible, due to electronic detector noise effectively snowing out the image. To achieve the longer exposures I do what many amateur astronomers do. I take multiple 30-second exposures, the ‘stack’ them using imaging software, thus producing the longer exposure.”
Ed note: Here are the Hubble Space Telescope’s finest photos.
h/t Twisted Sifter
Shot in Mauna Kea, Hawaii of space, this time-lapse is Charles Leung’s first video. Nice work.
You probably have seen the famous photo of Earth taken by the crew of Apollo 17 in 1972, which shows most of Antarctica, Africa and the Saudi Arabian peninsula. Well, we can add more amazing photographs to the ‘Blue Marble’ series. NASA’s Goddard Space Flight Center has released these beautiful images to the public, showing gorgeous detail of our planet.
This spectacular “blue marble” image is the most detailed true-color image of the entire Earth to date. Using a collection of satellite-based observations, scientists and visualizers stitched together months of observations of the land surface, oceans, sea ice, and clouds into a seamless, true-color mosaic of every square kilometer (.386 square mile) of our planet. These images are freely available to educators, scientists, museums, and the public. This record includes preview images and links to full resolution versions up to 21,600 pixels across.
Photos by Goddard Photo and Video Blog.