Approximately every two Earth years, when it is summer on the southern hemisphere of Mars, a window opens: Only in this season can water vapor efficiently rise from the lower into the upper Martian atmosphere. There, winds ...
Space Exploration
May 10, 2019
17
1785
Planetary scientist Erdal Yiğit, with George Mason University, has published a Perspective piece in the journal Science suggesting that upper atmospheric interactions with solar wind cannot fully explain the loss of surface ...
The lower portion of a Martian dust devil was captured moving along the western rim of Mars' Jezero Crater by NASA's Perseverance rover on Aug. 30, 2023, the 899th Martian day, or sol, of the mission. The video, which was ...
Space Exploration
Sep 29, 2023
8
7198
Scientists using an instrument aboard NASA's Mars Atmosphere and Volatile EvolutioN, or MAVEN, spacecraft have discovered that water vapor near the surface of the Red Planet is lofted higher into the atmosphere than anyone ...
Space Exploration
Nov 13, 2020
2
81
A new study led by researchers at the University of Miami's (UM) Rosenstiel School of Marine and Atmospheric Science found that smoke from fires in Africa may be the most important source of a key nutrient—phosphorus—that ...
Environment
Jul 29, 2019
2
2432
On its last orbits in 2017, the long-running Cassini spacecraft dove between Saturn's rings and its upper atmosphere and bathed in a downpour of dust that astronomers call "ring rain."
Space Exploration
Oct 4, 2018
11
228
Enormous cloud-like plumes reaching 260km above the surface of Mars have left scientists baffled. This is way beyond Mars's normal weather, reaching into the exosphere where the atmosphere merges with interplanetary space. ...
Space Exploration
Feb 17, 2015
9
127
Mars represents something of a conundrum for scientists. In many respects, it is significantly different from Earth. It's cold, it's dry, there is little atmosphere or precipitation to speak of, and nothing grows there. ...
Space Exploration
Dec 15, 2015
1
8
International experts are warning that potentially lethal air pollution has boomed in fast-growing big cities in Asia and South America in recent decades.
Environment
Mar 23, 2009
3
0
(Phys.org)—New research by Stanford aeronautics and astronautics Assistant Professor Sigrid Close suggests she's on track to solve a mystery that has long bedeviled space exploration: Why do satellites fail?
Space Exploration
Feb 27, 2013
25
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