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 ...

One AU is roughly the average distance between the Sun and the Earth, or 149,597,870.691 kilometres. But its formal definition by the International Astronomical Union (IAU) is rather more complicated.

For instance, one of the most commonly used means of measuring distances across space is known as an Astronomical Unit (AU). Based on the distance between the Earth and the Sun, this unit allows ...

The higher than expected rise in density is between 70 and 90 astronomical units from the Sun; an astronomical unit is a measurement of the average distance between Planet Earth and the Sun.

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 ...