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Latest MESSENGER Stories

2011-05-03 06:35:02

NASA Administrator Charles Bolden will commemorate the 50th anniversary of the first U.S. manned spaceflight during two events this week around the agency's Kennedy Space Center in Florida. NASA Television will carry both events live. On Wednesday, May 4, at 2 p.m. EDT, the U.S. Postal Service will unveil two new stamps at the Rocket Garden of the Kennedy Space Center Visitor Complex, located on State Road 405. Journalists interested in covering the event should contact Andrea Farmer at...

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2011-04-20 08:45:25

Mercury's Exosphere: A Brief Overview One of the primary science goals of MESSENGER is to study Mercury's very thin atmosphere, or exosphere. Although observations of the exosphere from orbit have begun, these data must be carefully calibrated, and analysis is still underway. In the meantime, here is a primer on Mercury's exosphere: what it is, how we observe it, and why it is important. What Is Mercury's Exosphere? Mercury's atmosphere is so tenuous that the atoms or molecules comprising it...

2011-04-06 14:00:00

DELRAY BEACH, Fla., April 6, 2011 /PRNewswire/ -- River Valley Community College of Claremont, New Hampshire and Medical Messenger have partnered together to add ONC Certified(1) features and functionality to the Nursing curriculum. The major curriculum bullets include: Electronic Prescription Processing (ePrescribing), SOAP Note Creation, Patient Demographics, Clinical Decision Support, Patient Histories (Family and Social). (Logo: http://photos.prnewswire.com/prnh/20101209/FL15062LOGO...

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2011-04-05 08:16:35

On April 4th, MESSENGER began its yearlong science campaign to understand the innermost planet. The spacecraft will fly around Mercury 700 times over the next 12 months, and its instruments will perform the first complete reconnaissance of the cratered planet's geochemistry, geophysics, geological history, atmosphere, magnetosphere, and plasma environment. "MESSENGER's orbital commissioning phase, which we just completed, demonstrated that the spacecraft and payload are all operating...

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2011-03-31 05:00:00

NASA released the first batch of hundreds of photos taken by MESSENGER during its orbit of Mercury on Wednesday. The images show numerous battle scars on the planet, which scientists said are from space rocks regularly pelting Mercury at high speeds. MESSENGER's images have revealed a planet full of craters from pieces of asteroids and comets. Mission chief scientists Sean Solomon said scientists are surprised to see more secondary craters than expected. Scientists said that those craters...

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2011-03-30 05:50:00

On Tuesday, NASA released the first image the MESSENGER spacecraft has taken during its close-up encounter of the planet Mercury. The first image taken by the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft focuses on a 50-mile-wide crater called Debussy. MESSENGER has taken 363 more photographs of Mercury so far, some of which NASA will release on Wednesday. MESSENGER is the first spacecraft to visit the planet since the Mariner mission in 1974. ...

2011-03-29 06:15:15

NASA will release the first orbital image of Mercury's surface, including previously unseen terrain, on Tuesday afternoon, March 29. Several other images will be available Wednesday, March 30, in conjunction with a media teleconference at 2 p.m. EDT to discuss these initial orbital images taken from the first spacecraft to orbit Mercury. NASA's MErcury Surface, Space ENvironment, GEochemistry, and Ranging, or MESSENGER, entered orbit March 17 after completing more than a dozen laps within the...

2011-03-23 11:45:00

NIAGARA FALLS, N.Y., March 23, 2011 /PRNewswire/ -- AMPAC-ISP CORP., American Pacific Corporation's (Nasdaq: APFC) wholly-owned in-space propulsion subsidiary (AMPAC-ISP), reported that their LEROS 1b bipropellant engine (LEROS 1b) fired for nearly fifteen minutes in the early hours on March 18, 2011 to slow the MESSENGER (MErcury Surface, Space ENvironment, GEochemistry, and Ranging) spacecraft and place it into orbit around Mercury. The orbit insertion firing slowed the spacecraft by more...

2011-03-22 07:28:03

Data from its first three days in orbit about Mercury have confirmed the initial assessment of the spacecraft team that MESSENGER is in its intended orbit and operating nominally. "The team is relieved that things have gone so well, but they remain busy as they continue to configure the spacecraft for orbital operations and monitor its health and safety in the new environment," says MESSENGER Project Manager Peter Bedini, of the Johns Hopkins University Applied Physics Laboratory in Laurel,...

2011-03-21 07:00:00

SACRAMENTO, Calif., March 21, 2011 /PRNewswire/ -- Aerojet, a GenCorp (NYSE: GY) company, announced today that NASA's MESSENGER (MErcury Surface, Space ENvironment, GEochemistry, and Ranging) spacecraft has successfully achieved the first-ever orbit around the planet Mercury using Aerojet's propulsion system. MESSENGER was launched aboard a Delta II on Aug. 3, 2004, and has traveled approximately five billion miles and flown by Earth, Venus and Mercury. The successful Mercury orbit...


Latest MESSENGER Reference Libraries

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2004-10-19 04:45:40

The Planet Mercury -- in astronomy, nearest planet to the sun, at a mean distance of 36 million mi (58 million km); its period of revolution is 88 days. Mercury passes through phases similar to those of the moon as it completes each revolution about the sun, although the visible disk varies in size with respect to its distance from the earth. Because its greatest elongation is 28, it is seen only for a short time after sunset or before sunrise. Since observation of Mercury is...

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Word of the Day
cacodemon
  • An evil spirit; a devil.
  • A nightmare.
  • In astrology, the twelfth house of a scheme or figure of the heavens: so called from its signifying dreadful things, such as secret enemies, great losses, imprisonment, etc.
'Cacodemon' comes from a Greek term meaning 'evil genius.'
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