Thermosphere
The region of the 's atmosphere from roughly 80-500 km altitude. It includes the .
Thermosphere - The layer of the atmosphere of a planet lying above the mesosphere. The lower thermosphere is the ionosphere. The upper thermosphere is the exosphere ...
Thermosphere
The thermosphere is the layer of the earth's atmosphere directly above the mesosphere and directly below the exosphere. Within this layer, ultraviolet radiation causes ionization....
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Geophysics ...
THERMOSPHERE
The thermosphere is a thermal classification. It is the layer of the atmosphere located between the mesosphere and outer space. In the thermosphere, temperature increases with altitude.
The thermosphere or heterosphere extends from the mesopause out to about 500 km.
thermosphere (NASA SP-7, 1965) See atmospheric shell. thermoswitch (NASA SP-7, 1965) A temperature-activated switch.
It is generally considered to include the stratosphere (or the top thereof) and the mesosphere, and sometimes the lower part of the thermosphere. See atmospheric shell.
Ionosphere The part of the atmosphere that is ionized by solar radiation stretches from 50 to 1,000 km (31 to 620 mi; 160,000 to 3,300,000 ft) and typically overlaps both the exosphere and the thermosphere.
**TIMED (Thermosphere Ionosphere Mesosphere Energetics and Dynamics)
*Lunar missions
**Ranger
**Surveyor
**Lunar Orbiter
**Clementine
**Lunar Prospector
**Moon Mineralogy Mapper (NASA instrument for ISRO's Chandraayan-1 spacecraft planned for 2007) ...
The outmost layer of the Uranian atmosphere is the thermosphere or corona, which has a uniform temperature around 800 to 850 K.
Thermosphere Ionosphere Mesosphere Energetics and Dynamics Mission (TIMED) →
This Month in Exploration
Time History of Events and Macroscale Interactions during Substorms (THEMIS) ...
The atmospheric layers are - in order of distance from sea level - the troposphere (10 km), stratosphere (45 km), mesosphere (80 km), thermosphere (200 km), and exosphere (400 km).
"Our observations show that current understanding of the mesosphere-lower thermosphere region is quite poor," says co-author Charlie Seyler.
Comparative Terrestrial Planet Thermospheres
from NSSDC
a Martian dust storm seen by HST; another from MGS; 2001 global storm
Mars Atlas and Viking Orbiter image-finder (access high-res images of the entire surface of Mars!) ...
Above the Mesosphere is the Thermosphere. Combined, the Thermosphere and the Mesosphere create the Ionosphere, which is 435 km (270 miles) thick. The last layer of our atmosphere is the Exosphere, which extends into space.
Temperatures then rise with increasing height through the overlying layer known as the thermosphere. Above about 100 kilometres, in the ionosphere, there is an increasing fraction of charged, or ionized, particles.
The layers, troposphere, stratosphere, mesosphere, thermosphere, and the exosphere, vary around the globe and in response to seasonal changes.
The ions are created when sunlight hits atoms and tears off some electrons. The ionosphere is located between the mesosphere and the exosphere (and is part of the thermosphere). Auroras occur in the ionosphere.
Above the stratosphere is the mesosphere and above that is the ionosphere (or thermosphere), where many atoms are ionized (have gained or lost electrons so they have a net electrical charge).
The periapsis portion of the orbit will allow in-situ measurements of the thermosphere and lower exosphere and remote sensing of the lower atmosphere and surface.
 See also: Atmosphere, Earth, Planet, Orbit, Temperature
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