The Saturn-like planet has a well-studied cousin – the first alien planet found using the transit approach – to which it can be compared, right down to the makeup of its atmosphere.
The planets beyond Mars exhibit the highest winds speeds of any other planets in the solar system. It's a puzzle, because less energy from the sun is available there to drive higher winds.
To find the planet, astronomers used Einstein's theory as it pertains to the intensity of a beam of light. The method could add more exoplanets to a growing list, no 'wobble' or 'transit' required.
A monster hurricane at Saturn's north pole, spotted by NASA's Cassini spacecraft, has an eye 1,250 miles wide and inner eye wall winds of 330 miles an hour. Its energy source is a mystery.
Tonight (April 23) through Friday at dawn may be your best chance of the year to spot a fireball, a meteor that shines brighter than Venus, the brightest planet in the sky.
The discovery of a colossal gas giant some 130 light-years from Earth could help explain the origins of our own solar system, say scientists.
Russian scientists say that they have detected an "unidentified and unclassified" bacterium from a giant lake locked under Antarctic ice. But some have suggested that the samples could have been contaminated.
Alien planet photo: In an astronomical first, a telescope in Chile has spotted the formation of a gas giant in the dust cloud orbiting a nearby star.
Canada's NEOSSat space telescope was launched Monday atop an Indian rocket. It will monitor two groups of asteroids whose proximity to the sun makes them hard to see from Earth.
The Kepler space telescope has found a planet smaller than Mercury orbiting a distant star. The discovery suggests Kepler has the precision to find a planet more like Earth.