The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...
Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. Here's what to know about the short ...
Planet demographics reveal a puzzling lack of worlds in a certain size range throughout the galaxy F or centuries our solar system was the only planetary system known to humans. We had no proof other ...
When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A planet-size object that possibly once visited the solar system may have permanently ...
New research shows that star activity can distort exoplanet measurements, affecting size, temperature, and atmosphere ...
Temperamental' stars that brighten and dim over a matter of hours or days may be distorting our view of thousands of distant ...
All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known ...
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