Astronomy
Big planet, small star
One of the smallest stars in the Galaxy has been found to have a planet orbiting it that is six times more massive than Jupiter. This gas giant is as far from its star as Mercury is from our Sun, but because the star is so small, it is like a scaled down version of our own Solar System, with the planet where Jupiter would be. This raises the possibility that there could be even more planets that are rocky like Earth even closer to the star.
The star in question is a red dwarf called VB 10. For a time it was one of the smallest stars known to exist. Red dwarfs are the most common type of star in the Galaxy, and are the coolest.
-
Rocky Earthlike Planet Discovered
Researchers on 21.4.09 confirmed the existence of a rocky Earthlike planet with a mass of 1.9 Earth masses, orbiting in the Gliese 581 system. Another planet in the four planet system was also found to be lying in the star's habitable zone, the...
-
Star Astronomy
Astronomy is as large as the universe that it seeks to discover. Star astronomy is just one part of the overall science and hobby. It would take a lifetime just to learn about all the objects that orbit our own small sun. Some people, then, decide to...
-
Carbon Dioxide On Extrasolar Planet
Artist's View of the Extrasolar Planet HD 189733b orbiting the star HD 189733 Just a short while ago, the Hubble Space Telescope took the first visible-light photograph of an extrasolar planet, a planet outside our solar system. Now just recently,...
-
Another Extrasolar Planet
The picture above is the first picture of a planet (top-left) orbiting a sun-like star. It was taken by the 270-inch diameter Gemini North Telescope, located on Mauna Kea in Hawaii. The star, 1RXS J160929.1-210524, is located in the Scorpius constellation,...
-
Planets Like Binary Stars, Too
In our solar system, planets, comets, asteroids, and dwarf-planets all orbit around a single star, our Sun. But imagine if we could witness two Suns in our sky. NASA's Spitzer Space Telescope has helped astronomers see that planetary systems are...
Astronomy