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Displaying results 1 - 10 of 100 items found.

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1. Flyby of Venus Speeds MESSENGER Onward to Mercury

(Web Page; Wed Nov 18 10:27:00 CST 2015)

The MESSENGER spacecraft is zeroing in on Venus for the most significant gravity assist maneuver of its long journey to Mercury. The flyby was previewed yesterday at a press conference held at NASA Headquarters in Washington, DC. Today a...

Description: The MESSENGER spacecraft is zeroing in on Venus for the most significant gravity assist maneuver of its long journey to Mercury.

2. Farewell, MESSENGER

(Web Page; Fri May 01 18:56:00 CDT 2015)

There is one less robot exploring the solar system today. MESSENGER, which has orbited Mercury for four years, finally ran out of fuel and crashed into the planet at 17:26 UT on Thursday, April 30, 2015. The impact happened out of sight ...

Description: There is one less robot exploring the solar system today. MESSENGER, which has orbited Mercury for four years, finally ran out of fuel and crashed into the planet at 17:26 UT on Thursday, April 30, 2015.

3. Earth and Moon from MESSENGER

(Web Page; Mon Jul 22 19:16:00 CDT 2013)

UPDATE: I've added a neat photo to this post, showing Earth as seen from GOES at the same time and from the same angle. Also check out my post on the "Day the Earth Smiled" picture from Saturn. Last week, members of the public were aske...

Description: A new picture of the Earth-Moon system from MESSENGER, taken the same day we were told to "Wave at Saturn." Updated with a neat photo taken from much closer to Earth from a similar perspective.

4. Skimming the inner planets: Updates on MESSENGER and Venus Express

(Web Page; Tue Jun 24 12:53:00 CDT 2014)

The two spacecraft currently orbiting the two innermost planets are both flying low in their orbits in the final phases of their missions. MESSENGER just performed a rocket burn to raise its orbit slightly, while Venus Express did the op...

Description: The two spacecraft currently orbiting the two innermost planets are both flying low in their orbits in the final phases of their missions. MESSENGER just performed a rocket burn to raise its orbit slightly, while Venus Express did the opposite.

5. LPSC 2015: MESSENGER's low-altitude campaign at Mercury

(Web Page; Wed Mar 25 19:54:00 CDT 2015)

The MESSENGER mission is nearly over. In fact, principal investigator Sean Solomon said at a press briefing last week, "the mission will come to a natural close, reaching a periapsis altitude of zero, otherwise known as impact on Mercury...

Description: At last week's Lunar and Planetary Science Conference, the MESSENGER team held a press briefing to share results from the recent few months of incredibly low-altitude flight over Mercury's surface. The mission will last only about five weeks more.

6. MESSENGER's Final Flyby of Mercury: Old Territory, New Science

(Web Page; Mon Nov 16 12:56:00 CST 2015)

MESSENGER is fast approaching the third and final Mercury flyby during its seven-year journey to the innermost planet. On September 29 at 21:55 UTC, it will sweep within 228 kilometers of Mercury's surface. The goal of the flyby is to sl...

Description: MESSENGER is fast approaching the third and final Mercury flyby during its seven-year journey to the innermost planet.

7. MESSENGER Scientists 'Astonished' to Find Water in Mercury's Thin Atmosphere

(Web Page; Thu Nov 19 16:01:00 CST 2015)

As MESSENGER flew past the night side of Mercury in January, its Fast Imaging Plasma Spectrometer (FIPS) scooped up ions from an atmosphere so tenuous that it's usually called an "exosphere." FIPS measured the expected amounts of ions li...

Description: As MESSENGER flew past the night side of Mercury in January, its Fast Imaging Plasma Spectrometer (FIPS) scooped up ions from an atmosphere so tenuous that it's usually called an "exosphere."

8. MESSENGER's First Mercury Flyby Highly Successful

(Web Page; Thu Nov 19 16:05:00 CST 2015)

On the evening of Tuesday, January 15, the MESSENGER science team crowded around a computer screen, anxiously awaiting their first view of the previously unseen hemisphere of Mercury. The moment was more dramatic than initially expected,...

Description: On the evening of Tuesday, January 15, the MESSENGER science team crowded around a computer screen, anxiously awaiting their first view of the previously unseen hemisphere of Mercury.

9. MESSENGER Rewrites Mercury Textbooks Even Before Entering Orbit

(Web Page; Tue Nov 10 08:51:00 CST 2015)

As MESSENGER zoomed toward Mercury for its third flyby, it was commanded to rotate in a maneuver that would help it test a surprising result from the second flyby. Just after that rotation maneuver began, there was a "hiccup," in the wor...

Description: As MESSENGER zoomed toward Mercury for its third flyby, it was commanded to rotate in a maneuver that would help it test a surprising result from the second flyby.

10. MESSENGER Snaps Earth-Moon Image in Approach to First Flyby

(Web Page; Wed Nov 18 10:45:00 CST 2015)

The MESSENGER spacecraft still has a long way to go before it finally settles into orbit around Mercury in March of 2011, but scientists are taking advantage of every milestone in the mission to warm up the spacecraft's science instrumen...

Description: As MESSENGER began its approach for its August 2 flyby of Earth, its cameras have snapped their first images. The images clearly show a cloudy Earth—and, to scientists' surprise, the Moon as well.

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