NASA’s Amazing Comet Hunter –“Nobody Dreamed We’d Approach 200 a Year”

 

 

1-nearing3000c

 

"SOHO has a view of about 12 and a half million miles beyond the sun," said Joe Gurman, the mission scientist for SOHO at NASA's Goddard Space Flight Center in Greenbelt, Maryland. "So we expected it might from time to time see a bright comet near the sun. But nobody dreamed we'd approach 200 a year."

(more…)

Thirty Percent of Stars Have Migrated Across the Milky Way –“Was Our Sun One?”

 

 

Pia18906-16

 

Scientists with the Sloan Digital Sky Survey-III (SDSS) have created a new map of the Milky Way that provides the first clear evidence of migration of stars throughout our galaxy. The study, which determined that 30 percent of stars have traveled across the galaxy, is bringing a new understanding of how stars are formed and travel throughout the Milky Way.

(more…)

NASA: Searching for Alien Planets Far From Their Host Star

 

 

URA05Uranus

 

 

NASA's Hubble Space Telescope and the W.M. Keck Observatory in Hawaii have made independent confirmations of an exoplanet orbiting far from its central star. The planet was discovered through a technique called gravitational microlensing.

(more…)

NASA: “The Rosetta Stone for Super-Earths?”

 

 

Image_3078_1e-HD-219134b

 

Using NASA's Spitzer Space Telescope, astronomers have confirmed the discovery of the nearest rocky planet outside our solar system, larger than Earth and a potential gold mine of science data. Dubbed HD 219134b, this exoplanet, which orbits too close to its star to sustain life, is a mere 21 light-years away. While the planet itself can't be seen directly, even by telescopes, the star it orbits is visible to the naked eye in dark skies in the Cassiopeia constellation, near the North Star.

(more…)

MIT: “An Interior Ocean May be Driving Geologic Activity on Pluto”

 

2-newhorizonsd

Recent data from NASA’s New Horizons probe — which passed within 7,800 miles of the surface on July 14 — have revealed striking features on Pluto's heart-shaped region that indicate the icy dwarf planet may harbor an ocean deep in its interior, according to mission scientists during a July 24 press briefing. They also provided new information about Pluto's thin atmosphere.

(more…)

"The Galaxy" in Your Inbox, Free, Daily