MAVEN completed 1,000 orbits around the Red Planet on April 6, 2015, four-and-a-half months into its one-year primary mission.
MAVEN is in its science-mapping orbit and has been taking data since the start of its primary mission on Nov. 16, 2014. The furthest point (apoapsis) in the spacecraft’s elliptical orbit has been 6,500 kilometers (4,039 miles) and the closest (periapsis) 130 kilometers (81 miles) above the #Martiansurface.
Shown here is an artist’s conception of MAVEN’s Imaging UltraViolet Spectrograph (IUVS) observing the “Christmas lights aurora” on Mars. MAVEN observations show that aurora on Mars is similar to Earth’s “Northern Lights” but has a different origin. (Courtesy CU/LASP)
The #MAVEN spacecraft has observed two unexpected phenomena in the #Martian atmosphere: an unexplained high-altitude dust cloud and aurora that reaches deep into the Martian atmosphere.
Shown here is a map of the MAVEN Imaging Ultraviolet Spectrograph’s auroral detections in December 2014 overlaid on Mars’ surface. The map shows that the aurora was widespread in the northern hemisphere, not tied to any geographic location. The aurora was detected in all observations during a 5-day period, though no data were taken in the southern hemisphere and some regions in the northern hemisphere were missed. (Courtesy CU/LASP)
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Courtesy of NASA’s MAVEN Mission to Mars
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Supermassive black holes at the cores of galaxies blast out radiation and ultra-fast winds, as illustrated in this artist’s conception. NASA’s NuSTAR and ESA’s XMM-Newton telescopes show that these winds, containing highly ionized atoms, blow in a nearly spherical fashion. Image Credit: NASA/JPL-Caltech
Our Nuclear Spectroscopic Telescope Array (NuSTAR) and ESA’s (European Space Agency) XMM-Newton telescope are showing that fierce winds from a supermassive black hole blow outward in all directions — a phenomenon that had been suspected, but difficult to prove until now.
Earth’s magnetosphere is depicted with the high-energy particles of the Van Allen radiation belts (shown in red) and various processes responsible for accelerating these particles to relativistic energies indicated. The effects of an interplanetary shock penetrate deep into this system, energizing electrons to ultra-relativistic energies in a matter of seconds. Courtesy of NASA
Scientists at MIT’s Haystack Observatory, the University of Colorado, and elsewhere have analyzed data from NASA’s Van Allen Probes, and observed a sudden and dramatic effect in the aftermath of a solar shockwave: The resulting magnetosonic pulse, lasting just 60 seconds, reverberated through the Earth’s radiation belts, accelerating certain particles to ultrahigh energies.
The complete story, courtesy of MIT News is found here:
This image shows an artist concept of the MAVEN spacecraft in orbit around Mars. (Courtesy NASA/GSFC)
The MAVEN spacecraft has completed the first of five deep-dip maneuvers designed to gather measurements closer to the lower end of the #Martianupper atmosphere.
“During normal science mapping, we make measurements between an altitude of about 150 km and 6,200 km (93 miles and 3,853 miles) above the surface,” said Bruce Jakosky, MAVEN principal investigator at the University of Colorado Boulder‘s Laboratory for Atmospheric and Space Physics. “During the deep-dip campaigns, we lower the lowest altitude in the orbit, known as periapsis, to about 125 km (78 miles) which allows us to take measurements throughout the entire upper atmosphere.”
The 25 km (16 miles) altitude difference may not seem like much, but it allows scientists to make measurements down to the top of the lower atmosphere. At these lower altitudes, the atmospheric densities are more than ten times what they are at 150 km (93 miles).
NASA Jet Propulsion Laboratory
Read the full release here:, courtesy of University of Colorado, LASP
Photo Courtesy of NASA’s MAVEN Mission to Mars posts
The Second walk-in maneuver of the deep-dip campaign completed successfully
The second #MAVEN deep-dip maneuver was executed yesterday (Feb. 11, 2015), with a delta-v (∆V) of 0.6 m/sec., which lowered the periapsis of the spacecraft by another 4 km. The first maneuver was carried out on Tuesday (Feb. 10) and lowered the periapsis by about 20 km.
The MAVEN spacecraft now has a periapsis altitude of ~130 km, where Mars’ atmosphere has an estimated density of 2.0 kg/km³
With Thursday February 12th’s start of the deep-dip science measurements, the MAVEN team is one step closer to solving the mystery of #Mars‘ climate history. — at NASA Goddard Space Flight Center.
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NASA’s MAVEN Mission to Mars