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 ...

We've only known about its existence for a few short weeks, and already astronomers have been able to learn a lot about the mysterious interstellar comet 3I/ATLAS. The object was detected on 1 July ...

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

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 ...

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), ...

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 ...