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This artist's concept shows NASA's Dawn spacecraft orbiting the giant asteroid Vesta. The depiction of Vesta is based on images obtained by Dawn's framing cameras. Image credit: NASA/JPL-Caltech

Dawn Gets Closer to Dwarf Planet Ceres, Gets Better Snapshots

This image is one several images NASA's Dawn spacecraft took on approach to Ceres on Feb. 4, 2015

This image is one several images NASA’s Dawn spacecraft took on approach to Ceres on Feb. 4, 2015 at a distance of about 90,000 miles (145,000 kilometers) from the dwarf planet. Image Credit: NASA/JPL.

NASA’s Dawn spacecraft, moving closer to Ceres, the dwarf planet, has snapped better and close pictures of this mysterious world. At a resolution of 8.5 miles (14 kilometers) per pixel, the pictures represent the sharpest images to date of Ceres.

After the spacecraft arrives and enters into orbit around the dwarf planet, it will study the intriguing world in great detail on the dwarf planet.

Ceres, with a diameter of 590 miles (950 kilometers), is the largest object in the main asteroid belt, located between Mars and Jupiter and is thought to contain a large amount of ice, which some scientists believe covers the surface an ocean.

Dawn spacecraft has been moving closer to Ceres and it was scheduled to enter the orbit of  the dwarf planet in the main asteroid belt which lies between Mars and Jupiter on March 6. The mission has already sent stunning images of the planet. (See below)

“We know so much about the solar system and yet so little about dwarf planet Ceres. Now, Dawn is ready to change that,” said Marc Rayman, Dawn’s chief engineer and mission director at NASA’s Jet Propulsion Laboratory in Pasadena, California.

This processed image, taken Jan. 13, 2015, shows the dwarf planet Ceres as seen from the Dawn spacecraft.Image credit: JPL, NASA

This processed image, taken Jan. 13, 2015, shows the dwarf planet Ceres as seen from the Dawn spacecraft.Image credit: JPL, NASA

Earlier images show the dwarf planet at 27 pixels across, about three times better than the calibration images taken in early December. The best images of Ceres so far were taken by NASA’s Hubble Space Telescope in 2003 and 2004.

This picture taken on Jan 13 this year at about 80 percent of Hubble resolution, was not quite as sharp.  The images will continue to improve as the spacecraft spirals closer to the surface during its 16-month study of the dwarf planet.

“Already, the (latest) images hint at first surface structures such as craters,” said Andreas Nathues, lead investigator for the framing camera team at the Max Planck Institute for Solar System Research, Gottingen, Germany.

Dawn’s arrival at Ceres will mark the first time a spacecraft has ever visited a dwarf planet and has already delivered more than 30,000 images and many insights about Vesta, the second most massive body in the asteroid belt that was explored by it for more than a year, from 2011 to 2012. Dawn was launched in 2007.

“Orbiting both Vesta and Ceres would be truly impossible with conventional propulsion. Thanks to ion propulsion, we’re about to make history as the first spaceship ever to orbit two unexplored alien worlds,” Marc Rayman, Dawn’s chief engineer and mission director, said.

Dawn is currently 640,000 km from Ceres, approaching the asteroid at around 725 km per hour and is scheduled to get into Ceres orbit on March 6, 2015, marking the first time ever a spacecraft has orbited two solar system targets.

After more than seven years cruising at stunning speeds, DAWN visited and explored protoplanet Vesta and will reach its second destination in the main asteroid belt, dwarf planet Ceres.

 

 

 

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