A team of astronomers have discovered a system of three Earth-like exoplanets orbiting a small star that is only 40 light-years away from Earth, that are considered good candidates for supporting life.

The star in question, an ultracool dwarf called TRAPPIST-1, is only a bit bigger than Jupiter, and only emits approximately one two-hundredths of the output of our Sun, making it too faint to see with the naked eye. The planets in question, however, orbit very close to the star, allowing them to gather enough light from the star to keep warm. Because of their extremely close orbits, the planets orbit TRAPPIST-1 extremely quickly: the innermost planet takes 1.5 Earth days for a single revolution, and the second planet’s year is only 2.4 days.
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One of astronomy’s most secretive phenomena, black holes, has yielded yet another fascinating puzzle to astronomers — and in the process, offering what may be new insight into how the universe formed. A recent survey of a region of deep space has found that the powerful jets that are propelled by some supermassive black holes are uncannily aligned, all pointing in the same direction.
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A team of planetary scientists from the California Institute of Technology have published a paper documenting strong circumstantial evidence for a large planet with an orbit outside of Pluto’s. This yet-undiscovered planet is hypothesized to be smaller than Neptune, but would be 10-times more massive than Earth, and comes no closer than 30.5 billion km (19 billion miles) to the Sun.
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With recent advances in imaging technology pushing the boundaries of astronomy and space exploration more rapidly than ever before, new discoveries within the solar system and beyond are now being made at a breakneck pace. Part of that exploration has been for the elusive Planet X, a theorized large trans-Neptunian world that has otherwise eluded attempts at detection. Until now, only smaller planetoids have been discovered in the deep dark of space, but two new findings hold promise as new candidates for the title of Planet X.
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