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Latest MESSENGER Stories

2c2489b35e598c22f4d4447a1c9fabd9
2011-05-26 09:44:59

MESSENGER's Mercury Laser Altimeter (MLA) in its first 2 months of operation has already built up a grid of ground tracks that span most of Mercury's surface north of the equator (Figure 1). These data will provide a very good measure of the shape of the planet's northern hemisphere. The shape of a planet carries a record of all of the interior dynamical and geological processes that have modified the surface. Signals from MLA's laser reflected from the surface can be recovered whenever the...

2011-05-20 00:00:29

NewMSNMessenger.com launches the latest online property not affiliated with Microsoft but promoting MSN Messenger. Chat with friends, family and business partners for free. Simply download MSN Messenger, use a hotmail email address to login, add contacts and start chatting for free. MSN Messenger allows use to chat via voice, video, or text, all for free, all over the world. (PRWEB) May 18, 2011 NewMSNMessenger.com launches its new website for downloads of MSN Messenger. NewMSNMessenger.com...

04a7d6a6ef7a8f9eeac90ad7fcbbba69
2011-05-09 08:21:14

On May 6th, MESSENGER began its 100th orbit around Mercury. Since its insertion into orbit about the innermost planet on March 17, the spacecraft has executed nearly 2 million commands. The data gathered so far include more than 70 million magnetic field measurements, 300,000 visible and infrared spectra of the surface, 16,000 images, and 12,000 X-ray and 9,000 gamma-ray spectra probing the elemental composition of Mercury's uppermost crust. "As the primary orbital phase of the MESSENGER...

2011-05-04 12:58:00

Two Stamps Recognize 50th Anniversary of First Manned Spaceflight KENNEDY SPACE CENTER, Fla., May 4, 2011 /PRNewswire-USNewswire/ -- The Postal Service dedicated two stamps today commemorating two historic events -- one that occurred a half century ago, and the second that's making history now. (Photo: http://photos.prnewswire.com/prnh/20110504/DC95506) The 50th anniversary of America's first manned spaceflight and an unmanned spacecraft currently charting planet Mercury were...

88568e6ae400167af46bc0c864b0d260
2011-05-04 08:54:16

MESSENGER carries a Gamma-Ray Spectrometer (GRS) that is capable of measuring and characterizing gamma-ray emissions from the surface of Mercury. Just like radio waves, visible light, and X-rays, gamma rays are a form of electromagnetic radiation, but with higher energies than those other types of radiation. Gamma rays coming from Mercury carry information about the concentrations of elements present on its surface, so observations from the MESSENGER GRS are being used to determine the...

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...

b8a9c24e14e1e1b25edcc4372a6d07f41
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...

df6439765d9d5ce803104dbdda3916d6
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...

67839dc8296836b7b6df638e9ac667df1
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...


Latest MESSENGER Reference Libraries

4_9748baf12fb7dd89aa4315d7732196cd2
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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