1.
New theory addresses frozen Earth paradox
WASHINGTON, Oct. 1 (UPI) -- The U.S. space agency says its Messenger spacecraft will make the second of three flybys of Mercury next week to collect more science data.
The National Aeronautics and Space Administration spacecraft is to pass 125 miles above Mercury, taking more than 1,200 pictures. NASA said the flyby also will provide a critical gravity assist needed for the probe to become, in March 2011, the first spacecraft to orbit Mercury.
"The results from Messenger's first flyby of Mercury resolved debates that are more than 30 years old," said Sean Solomon, the mission's principal investigator from the Carnegie Institution of Washington.
During its first flyby Jan. 14, Messenger's cameras returned images of approximately 20 percent of Mercury's surface never before seen. Those images, among other things, showed Mercury's magnetic field appears to be actively generated in a molten iron core and the planet has contracted more than previously thought.
Messenger is now is more than halfway through its 4.9-billion-mile journey to enter orbit around Mercury.
|
|
|
|
|
|
| Additional Science News Stories | |
WASHINGTON, May 31 (UPI) --
The U.S. House Thursday rejected a bill that would outlaw abortions based on gender, with abortion opponents promising to make the vote an election issue.
|
NEW YORK, May 31 (UPI) --
Actor Michael McKean, who was hit by a car last week while walking in New York, says he has been discharged from St. Luke's Hospital.
|
BALTIMORE, May 31 (UPI) --
U.S. astronomers are forecasting the Milky Way will have a violent collision with the neighboring Andromeda galaxy in about 4 billion years.
|
CLEVELAND, May 31 (UPI) --
Cleveland prosecutors have dropped their case against a man who was ticketed for littering when he dropped a dollar he was attempting to give a disabled person.
|
| Stories | Photos | People | Comments |
View Caption
