Researchers just got a step closer to understanding the origins of our solar system, with the discovery of an object orbiting ...

For reference, Pluto’s average distance from the Sun is about 40 AU, so 2023 KQ14 is quite distant. At 23.4 billion miles (37 ...

Now the diameter of the known universe can be described as 558 billion trillion miles (that’s 558 followed by 21 zeros) or 28 ...

Some of that seems to be related to a general lack of familiarity with what an astronomical unit actually is (it's the distance from Earth to the sun, for the record), ...

Thus, he argues, all units of astronomical distance, from the AU to the parsec (equivalent to 3.26 light-years, and derived from the apparent motion of nearer stars against the background that ...

Next time a 5-year-old asks you how far the sun is, know you have the unanimous support of the International Astronomical Union (IAU) in answering clearly and confidently: 149,597,870,700 meters ...

On Monday, Nov. 11, 20199, Mercury will appear to pass across the disk of the sun as seen from Earth. This event — which astronomers call a transit — helped early astronomers measure distances ...