Scientists studying the atmosphere above Barrow, Alaska, have discovered unprecedented levels of molecular chlorine in the air, a new study reports.
New research published in the journal Nature resolves decades of scientific controversy over the origin of the extremely energetic particles known as ultra-relativistic electrons in the Earth's near-space environment and is likely to influence our understanding of planetary magnetospheres throughout the universe.
Swirling through Earth’s upper atmosphere is a layer of charged particles called the ionosphere. Constantly on the move, currents through the ionosphere can be much more complicated than winds at lower altitudes, because the currents vary in concert with magnetic fields around Earth and solar activity.
In the tropics at heights more than 10 miles above the surface, the prevailing winds alternate between strong easterlies and strong westerlies roughly every other year.
Gone are the days of being able to count the number of known planets on your fingers. Today, there are more than 800 confirmed exoplanets - planets that orbit stars beyond our sun - and more than 2,700 other candidates.
Mars may have lost much of its original atmosphere, but what's left remains quite active, recent findings from NASA's Mars rover Curiosity indicate.
A new study has found that many microbes are able to cross the Pacific Ocean on dust plumes.
For the first time, NASA’s Cassini spacecraft has recorded the effect of changing seasons on Saturn’s Earth-like moon Titan.
Data from NASA's Curiosity rover is helping to explain how Mars may have lost much of its original atmosphere, leaving it with 100 times less than Earth.
Observations from NASA's Lunar Reconnaissance Orbiter (LRO) have revealed the presence of helium in the thin atmosphere surrounding the moon.
Astronomers have used a new technique to study the atmosphere of a 'hot Jupiter' exoplanet.
As Venus made its transit the sun, spacecraft and ground-based telescopes ahave been looking for a phenomenon that's only recently been explained: the Arc of Venus.
Scientists have concluded that the Earth's early atmosphere was loaded with greenhouse gases - by examining fossilized raindrop impressions.
The early Earth flipped back and forth between a hydrocarbon-free atmosphere and a hydrocarbon-rich one similar to that of Saturn's moon, Titan.
Observations from NASA's Cassini spacecraft have revealed an oxygen atmosphere around Saturn's moon Dione.
Astronomers using the Hubble Space Telescope have identified a new type of planet - a waterworld surrounded by a thick, steamy atmosphere.
The Martian atmosphere contains water vapor in a supersaturated state, say surprised ESA scientists.
While Venus's weather at ground level is pretty boring - a steady 800 degrees Farenheit and heavy sulfuric acid clouds - it all gets a bit more interesting further up, say NASA scientists.
The solar-powered Juno spacecraft lifted off aboard an Atlas V rocket this morning and began its five-year journey to the planet Jupiter.
A massive scar that appeared in Jupiter's atmosphere last summer was caused by an asteroid 'the size of the Titanic', says NASA.