LISTEN LIVE KPR - On Air: Listen Live to classical, jazz and NPR news Schedule LATEST
NEWSCAST
KPR 2 - On Air: Listen live to KPR's all talk-radio service, KPR2 Recordings

Share this page              

NASA Sees 'Bright Spots' On Dwarf Planet In Our Solar System

An image taken by NASA's Dawn spacecraft of dwarf planet Ceres shows that the brightest spot on the planet has a dimmer companion.

Scientists are puzzled by a new image taken by NASA's Dawn spacecraft, which found two bright spots on the dwarf planet Ceres. The spots are noticeably brighter than other parts of the surface, which looks to be rocky and pock-marked.

Ceres lies in an asteroid belt between the paths of Mars and Jupiter. A white area was previously seen back in 2004, in an image taken by the Hubble Space Telescope. But new images show there are actually two spots, and scientists do not know what's causing them.

"Ceres' bright spot can now be seen to have a companion of lesser brightness, but apparently in the same basin," says Chris Russell, principal investigator for the Dawn mission that's based at the University of California, Los Angeles. "This may be pointing to a volcano-like origin of the spots, but we will have to wait for better resolution before we can make such geologic interpretations."

The image was taken on Feb. 19 from a distance of nearly 29,000 miles, NASA says. The Dawn craft will eventually enter into orbit around Ceres, promising even sharper images of the mysterious spots.

"The brightest spot continues to be too small to resolve with our camera, but despite its size it is brighter than anything else on Ceres. This is truly unexpected and still a mystery to us," said lead investigator Andreas Nathues, of the framing camera team at the Max Planck Institute for Solar System Research in Gottingen, Germany.

Ceres is some 590 miles across, with a diameter that's wider at the equator than at the poles. Scientists have called it an "embryonic planet" whose development was stalled by the gravity of nearby Jupiter.

More from NASA's overview:

"Ceres has more in common with Earth and Mars than its rocky neighbors. There are signs that Ceres contains large amounts of water ice beneath its surface. Scientists using the Herschel Space Observatory found evidence for water vapor on Ceres. The vapor may be produced by cryovolcanoes or by ice near the surface sublimating (transforming from solid to gas). This proves that Ceres has a icy surface and an atmosphere as well. Astronomers estimate that if Ceres were composed of 25 percent water, it may have more water than all the fresh water on Earth."

Copyright 2015 NPR. To see more, visit http://www.npr.org/.

Tower Frequencies

91.5 FM KANU Lawrence, Topeka, Kansas City
89.7 FM KANH Emporia
99.5 FM K258BT Manhattan
97.9 FM K250AY Manhattan (KPR2)
91.3 FM  KANV Junction City, Olsburg
89.9 FM K210CR Atchison
90.3 FM KANQ Chanute
96.1 FM K241AR Lawrence (KPR2)

See the Coverage Map for more details

Contact Us

Kansas Public Radio
1120 West 11th Street
Lawrence, KS 66044
Download Map
785-864-4530 (Main Line)
888-577-5268 (Toll Free)
contact@kansaspublicradio.org