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One Pluto year equals 248 Earth years. At 1473 miles in diameter—about half the width of the United States—Pluto is the ...

This week, an old astronomical controversy is renewed as researchers present new evidence for a hidden "Planet X" in our ...

NASA engineers have successfully completed testing on one half of the Nancy Grace Roman Space Telescope — a key step in making sure this future observatory will perform as expected once it reaches ...

After two decades of debate, research confirms that an odd binary star system has an equally odd planetary companion ...

NASA’s astrobiology ambitions are at risk of collapsing under the White House’s proposed budget. But your voice can make a ...

The project cancellation comes after NASA has already invested 15 years and $3.4 billion in the telescope, which is 90% complete.

NASA's Chandra X-ray Observatory regularly images our home ... in the May 2024 issue of the Monthly Notices of the Royal Astronomical Society.

Multiple space agencies will send missions to the moon this decade and the next, with plans to establish infrastructure that ...

Exoplanets—planets that orbit stars beyond our solar system—have transformed our understanding of the universe. Since the ...