How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between ...

Both star and planet are the same magnitude (1.4) but their colors will give them away. Regulus is a hot, blue-white star whose temperature reaches some 15,400 kelvins, more than twice our Sun’s ...

Dawn over Ceres, a mission of humankind In December 2003, the Hubble Telescope spotted something peculiar on the surface of Ceres, a dwarf planet in the asteroid belt between Mars and Jupiter ...

The Hubble Space Telescope has been used to determine the mass of white dwarf star LAWD 37. It is "56 percent the mass of our Sun," according to NASA/ESA. Credit: NASA, ESA, P. McGill (Univ. of ...

Scientists using the James Webb Space Telescope may have directly imaged a Saturn-mass planet orbiting the young star TWA 7.

Based on the new model, the first of these white dwarf explosions isn’t due for at least 10 1100 years. That’s a 1 followed by 1,100 zeros—a number so big that we don’t have a name for it.

James Webb’s mid-infrared vision has likely captured a frigid, Saturn-mass planet shaping the dusty rings around the nearby ...

Astronomers have discovered a world outside the solar system about 240 light-years away in space that is a freak of nature. Somehow, a little red dwarf star only one-fifth the size of the sun gave ...

A possible dwarf planet, like Pluto, has been observed in our solar system, according to a preprint published in arXiv. The area of space where this planet was found was previously thought empty.

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Astronomers using NASA’s James Webb Space Telescope have captured compelling evidence of a planet with a mass similar to ...