An international team of astronomers discovered another “Earth-like” planet that may be capable of sustaining life. Five times the size of Earth, “Gliese 832 c” is 16 light years away and appears to have a habitable zone and water, opening the possibility for life existing on the planet. Gliese 832c goes around its host star every 36 days. But that host star is a red dwarf that’s much dimmer and cooler than our sun, so Gliese 832c receives about as much stellar energy as Earth does, despite orbiting much closer to its parent..
A mystery object that appeared and then vanished again from a giant lake on Titan, the largest moon of Saturn. The sighting could be an iceberg that broke free of the shoreline, an effect of rising bubbles, or waves rolling across the normally placid lake’s surface, scientists say.
Pluto has long been regarded as something of an anomaly in our solar system. Compared to neighboring worlds, the dwarf planet has an extremely tilted orbit which sometimes brings it closer to the sun than Neptune. Now, astronomers in Spain believe it has yet another unusual feature – the world may be harboring two supersized planets just out of reach of our telescopes.
NASA’s Hubble telescope captures breathtaking images of the Monocerotis star’s explosion and its aftermath over a span of four years. The light eruption was so bright that for a while it was one of the most luminous stars in the Milky Way.
Planets orbiting double stars have been a favorite of science fiction writers. Until now, astronomers did not know that a double sunset like that made famous by the movie Star Wars was possible. The Kepler telescope is a game changer.
New Hubble telescope photos reveal stars and other celestial bodies that would have been impossible to observe on the ground, giving astronomers critical information that will prove useful as the launch of the more powerful James Webb Space Telescope approaches.
In a discovery decades in the making, scientists have detected the first of a “theoretical” class of stars first proposed in 1975 by physicist Kip Thorne and astronomer Anna Żytkow. Thorne-Żytkow objects (TŻOs) are hybrids of red supergiant and neutron stars that superficially resemble normal red supergiants, such as Betelguese in the constellation Orion. They differ, however, in their distinct chemical signatures that result from unique activity in their stellar interiors.
Zilong Li and Cosimo Bambi with Fudan University in Shanghai have come up with a very novel idea—those black holes that are believed to exist at the center of a lot of galaxies, may instead by wormholes.
Astronomers announced that they have discovered a new type of planet – a rocky world weighing 17 times as much as Earth. Theorists believed such a world couldn’t form because anything so hefty would grab hydrogen gas as it grew and become a Jupiter-like gas giant. This planet, though, is all solids and much bigger than previously discovered “super-Earths,” making it a “mega-Earth.”
NASA’s revolutionary solar observatory has captured rare footage of super-hot bubbles on the sun’s surface, known as coronal mass ejections (CMEs). While CMEs are not rare themselves, this time is different – because for the first time, the process was caught on camera by NASA’s Interface Region Imaging Spectrograph, or IRIS.