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Using NASA Herschel Space Observatory, astronomers have discovered that comet Hartley 2 possesses a ratio of heavy water to light, or normal, water that matches what found in Earth oceans.
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Artist rendering of NASA’s Stardust returning to Earth. Stardust is the first U.S. space mission dedicated to the exploration of a comet, and the first robotic mission designed to return extraterrestrial material from outside the orbit of the Moon.
Ver en NASA ↗This non-circular pit seen in this image from NASA Mars Reconnaissance Orbiter is due to a low angle impact from an asteroid or comet. The raised plateau west of the crater was where most of the impact debris landed.
Ver en NASA ↗NASA Galaxy Evolution Explorer discovered an exceptionally long comet-like tail of material trailing behind Mira -- a star that has been studied thoroughly for about 400 years.
Ver en NASA ↗NASA Deep Impact flyby spacecraft took this image after it turned around to capture last shots of a receding comet Tempel 1. Earlier, the mission probe had smashed into the surface of Tempel 1.
Ver en NASA ↗This image shows NASA Deep Impact impactor probe approaching comet Tempel 1. It is made up of images taken by the probe impactor targeting sensor on July 4, 2005. Animation available at the Photojournal.
Ver en NASA ↗Many types of craters exist on Mars. Most are generated by impacts of asteroids and comets. However, in this image captured by NASA Mars Reconnaissance Orbiter, the craters may be due to steam explosions.
Ver en NASA ↗This frame from a movie shows NASA Deep Impact impactor probe approaching comet Tempel 1. It is made up of images taken by the probe impactor targeting sensor in 2005.
Ver en NASA ↗The eastern rim of this unnamed crater in Claritas Fossae is very degraded, as seen in this image from NASA Mars Odyssey, indicating that it very ancient and has been subjected to erosion and bombardment from impactors such as asteroids and comets.
Ver en NASA ↗These images shows comet Tempel 1 as seen through the clear filter of the medium resolution imager camera on NASA Deep Impact. The images were acquired between June 22 and June 24, 2005.
Ver en NASA ↗This image layout depicts changes in the surface of comet Tempel 1, observed first by NASA Deep Impact Mission in 2005 top right and again by NASA Stardust-NExT mission on Feb. 14, 2011 bottom right.
Ver en NASA ↗The impact of an asteroid or comet several hundred million years ago left scars in the landscape that are still visible in this spaceborne radar image of an area in the Sahara Desert of northern Chad.
Ver en NASA ↗This image shows a flash produced in a laboratory by a high-velocity bead slamming into dust. Scientists at Ames Research Center say that the collision between Deep Impact impactor and comet Tempel 1 may have produce a similar flash.
Ver en NASA ↗This false-color image reveals the scar of a past major impact of a comet or small asteroid on Europa surface. A city-sized impact crater was viewed by NASA Galileo spacecraft.
Ver en NASA ↗Infrared scans of comet Hartley 2 by NASA EPOXI mission spacecraft show carbon dioxide, dust, and ice being distributed in a similar way and emanating from apparently the same locations on the nucleus.
Ver en NASA ↗This image is a compilation of four images that were taken on June 13, 2005 by NASA Deep Impact. The spacecraft is 18,675,137.9 kilometers 11,604,190 miles away from comet Tempel 1.
Ver en NASA ↗This image obtained by NASA Stardust spacecraft shows a side of the nucleus of comet Tempel 1 that has never been seen before; three terraces of different elevations are visible, with dark, banded scarps, or slopes, separating them.
Ver en NASA ↗This image taken by NASA Spitzer Space Telescope shows the comet Encke riding along its pebbly trail of debris long diagonal line between the orbits of Mars and Jupiter.
Ver en NASA ↗This enhanced image, one of the closest taken of comet Harley 2 by NASA EPOXI mission, shows jets and where they originate from the surface. There are jets outgassing from the sunward side, the night side, and along the terminator.
Ver en NASA ↗This display shows highly processed images of the outburst of comet Tempel 1 between June 22 and 23, 2005. The pictures were taken by NASA Deep Impact medium-resolution camera.
Ver en NASA ↗This image from NASA EPOXI mission shows Hartley 2 moving across the background field of stars. The coma, or cloud of gas and dust around the comet, expands and brightens over this time period. Animation available at the Photojournal.
Ver en NASA ↗This image shows comet Tempel 1 approximately 90 seconds before NASA Deep Impact probe smashed into its surface. It was taken by the probe impactor targeting sensor.
Ver en NASA ↗This movie was taken by Deep Impact flyby spacecraft shows the flash that occurred when comet Tempel 1 ran over the spacecraft probe. It was taken by the flyby craft medium-resolution camera.
Ver en NASA ↗This image from NASA Galaxy Evolution Explorer shows NGC 4565, one of the nearest and brightest galaxies not included in the famous list by 18th-century comet hunter Charles Messier.
Ver en NASA ↗Contenido y metadatos proporcionados por la NASA Image and Video Library.