The Earth is teeming with life, which occupies a diverse array of environments; other bodies in our Solar System offer fewer, if any, niches that are habitable by life as we know it. Nonetheless, astronomical studies suggest that many habitable planets may be present within our Galaxy....
根据最后一段The "water worlds" are outside their star's habitable place—the area in which temperatures allow liquid water on the surface of a rocky planet,possibly supporting life.But the new planet described by the researchers,Kepler 138-e,does fall into that just-right area,according to ...
D Two far-off planets are likely made of water, according to NASA's research. They're “unlike any planets foun d in our solar system".The system they studie d is calle d Kepler-138 because it's locate d within the fiel d of vision of NASA's Kepler spacecraft. Researchers have kno...
It turns out that planetary systems in our galaxy exhibit remarkable diversity—some have tightly packed planets in exotic configurations; others are dominated by gas giants skimming their stars. Now a new era of planetary science has emerged:exoplanet demographics. By analyzing patterns in the sizes...
Starting this week, humanity is sending a wave of unmanned spacecraft to Mars to see if it was ever habitable and find out if it could be again. The three spacecraft, which are being sent by the United States, China and the United Arab Emirates, will land on o...
The Fermi Paradox seeks to answer the question of where the aliens are. After all, the universe is incredibly old, big and filled with potentially habitable planets. (Image credit: bjdlzx via Getty Images) Jump to: Fermi Paradox FAQs The scale of the paradox Possible explanations ...
They also provide a steady supply of sunlight to any life-bearing planets within their habitable zone. Additionally, dwarf stars are dim (昏暗的), so the habitable zone lies closer in. If the planet is closer to the star, it’s easier for astronomers to detect a transit observation. A ...
Thebestplacestolookmaybedwarfstars.Smallerthanthesun,dwarfstarsareplentiful;sevenofthetenstarsnearesttoEartharedwarfstars.Theyalsoprovideasteadysupplyofsunlighttoanylife-bearingplanetswithintheirhabitablezone.Additionally,dwarfstarsaredim,sothehabitablezoneliescloserin.Iftheplanetisclosertothestar,it'seasierfor...
Kepler-138e: A Planet in the Habitable Zone While earlier NASA Kepler space telescope observations only showed transits of three small planets around Kepler-138, Piaulet and her team were surprised to find that the Hubble and Spitzer observations suggested the presence of a four...
The paradox is based on the following premises: There are billions of stars in the Milky Way similar to the Sun, many of them far older than our solar system. With high probability, some of these stars have Earth-like planets in their habitable zones where life as we know it could exist...