Sentences with phrase «atmospheric loss»

This measurement is important in determining the rate of atmospheric loss.

The Sahara off - road experience was kept to a basic dirt trail on the approach to a hilltop site where Jeep had some Rubicons prepared for us to hop into (the turbo - four is excellent for crawling, offering the sort of predictable and smooth power delivery needed to keep everything shiny without worries about atmospheric loss at altitude).

The objective of the MAVEN mission EPO program is to engage multiple audiences in the quest to understand Mars» long - term atmospheric losses, giving insight into the history of Mars» atmosphere and climate, liquid water, and planetary habitability.

«Our analysis suggests that such space weather events may prove to be a key driver of atmospheric losses for exoplanets orbiting an active young Sun - like star,» the authors write.

When Charon is positioned between the Sun and Pluto, Georgia Tech research indicates that the moon can significantly reduce atmospheric loss

They plan to examine data from other instruments on MAVEN to see if escaping particles map to the same regions where they see reconnected magnetic fields to confirm that reconnection is contributing to Martian atmospheric loss and determine how significant it is.

MAVEN carries a suite of instruments that have been measuring Mars» atmospheric loss since November 2014.

This process could cause severe atmospheric losses that would prevent the water that evaporates from exoplanets from raining back onto them, leaving the surface of the planet to dry up.

Future missions like the James Webb Space Telescope, which NASA will launch in 2019 to peer into the early history of the universe, will therefore «be essential for getting more information on stellar winds and exoplanet atmospheres,» the authors say, «thereby paving the way for more accurate estimations of stellar - wind induced atmospheric losses.»

New measurements of atmospheric loss by NASA's MAVEN probe should help scientists determine how a planet with rushing water and a temperate climate a few billion years ago transformed into a cold, dry desert.

«Argon is the clearest signature of atmospheric loss because it's chemically inert and does not interact or exchange with the Martian surface or the interior.

At Mars, they are thought to be one possible mechanism for driving atmospheric loss.

The reappearance of these ions, which retain characteristics of the pristine solar wind, provides a new way to track the properties of the solar wind and may make it easier to link drivers of atmospheric loss directly to activity in the upper atmosphere and ionosphere.

Since among the main goals of this mission are the characterization of atmospheric loss processes (with special attention to water) and the identification of their relation to the solar wind (Bougher et al. 2014), major scientific return related to space weather is expected in the next years.

NGIMS can provide a basis for models of present and past atmospheric loss.

It also must have some kind of volcanism which might counter atmospheric loss from the solar wind.

The stellar ultraviolet (UV) radiation from M dwarfs is strong and highly variable, and impacts planetary atmospheric loss, composition and habitability.

Since most of the atmosphere was lost as part of a dramatic climate change, MAVEN will make definitive scientific measurement of present - day atmospheric loss that will offer insight into the Red Planet's history.

«Even a weak electric wind could still play a role in water and atmospheric loss at any planet,» said Dr Alex Glocer of NASA Goddard, a co-author on the paper.

When Charon is positioned between the Sun and Pluto, Georgia Tech research indicates that the moon can significantly reduce atmospheric loss (Credit: NASA / JHUAPL / SwRI)

Because more charged particles would be created, there also would be more sputtering, another form of atmospheric loss.

The new research, published today in the journal Geophysical Research Letters, explains that this atmospheric loss is driven by a polar wind powered by an interaction between sunlight, the solar magnetic field and the molecules present in the upper atmosphere.

Stern points out, however, that long - term climate cycles in Pluto's tilt and orbit can cause its climate to vary wildly, which means that the atmospheric loss rate may have been much higher in the past.

«But the stellar wind can significantly contribute to the long - term erosion and atmospheric loss of many exoplanets, so the climate models tell only part of the story.»

«We are measuring those atmospheric losses and trying to understand how the particles are getting kicked into the atmosphere,» says co-author Robyn Millan, an associate professor in Dartmouth's Department of Physics and Astronomy and the principal investigator of BARREL.

Figuring out the planet's atmospheric loss would enable scientists to better understand how Mars transformed from a once water - rich planet more like our own to the today's drier, colder and less hospitable world.

«We are beginning to see the links in a chain that begins with solar - driven processes acting on gas in the upper atmosphere and leads to atmospheric loss,» said Bruce Jakosky, MAVEN principal investigator with the Laboratory for Atmospheric and Space Physics at the University of Colorado, Boulder.

«NASA's MAVEN Mars orbiter mission identifies links in chain leading to atmospheric loss.»

The primary culprit for Mars» atmospheric loss is the solar wind!

«Even a weak electric wind could still play a role in water and atmospheric loss at any planet,» said Alex Glocer of NASA Goddard, a co-author on the paper.

With a larger sample, planets at varying stages of atmospheric loss will be found that confirm whether or not the majority of close in rocky planets are the burnt embers leftover of gas giants who ventured to close to their host stars.

Scientists are still investigating how this atmospheric loss occurred, but suggest that the sun might have pushed light molecules out of Mars» upper atmosphere that could not be held in by the planet's gravity.

Scientists usually say Mars must have had a thicker atmosphere in the past that was lost to space; NASA's MAVEN (Mars Atmosphere and Volatile Evolution) spacecraft is at the Red Planet looking at atmospheric loss.

Jakosky and the MAVEN team tie the magnetic field loss to the atmospheric loss on Mars.