Dark matter could make exoplanets habitable

Dark matter could help maintain liquid water on the surface of large exoplanets, making it possible for life to emerge, evolve, and survive, even in the absence of additional energy from starlight or other sources.
For a planet to be able to maintain liquid water on its surface, scientists assume it has to …

Two billion alien earths in our Galaxy

Recently, after the first results from NASA’s Kepler mission, scientists estimated there could be about 500 miilion Earth-like planets in our Galaxy. According to the new estimate, 1 out of 37 Sun-like stars could harbor an Earth-like world.
Considering the number of Sun-like stars in the Milky Way, billions of Earth-like planets …

The coolest “neither planet, nor star” brown dwarf

About 63 light years away from Earth, lies a very cool brown dwarf. It is approximately seven times the mass of Jupiter, and its temperature is of 30°C (86°F), making thinner and thinner the line between small stars and giant planets.
Brown dwarfs are peculiar objects: they are neither planets, nor …

Exoplanets: The habitable zone not so habitable?

The hunt for exoplanets is still going, and their number constantly growing (see here, and here). Among all the worlds orbiting other stars, scientists hope to find what could be another Earth, another planet that could harbor life as we know it. For this to be possible, a planet has …

50 billion alien worlds in our Galaxy

If you go back in time,  a bit more than 15 years ago, there were only 9 known planets, the ones in our solar system! With the first definitive detection of an exoplanet orbiting another star in 1995 started the modern era of exoplanetary discovery.
Recently, the Kepler mission brought the …

 Page 3 of 4 « 1  2  3  4 »

© 2010-2017 Atra Materia All Rights Reserved -- Copyright notice by Blog Copyright