Let's say we want to build a model of the sun and Earth alone. Earth has a radius of about 6,371 kilometers (3,959 miles), but let's represent this with a marble 1 centimeter in diameter.

Astronomers have discovered a rare instance of a interstellar comet speeding through the solar system. The 3I/ATLAS was first ...

This diagram shows how the Moon appears to change shape as it orbits (circles) the Earth due to which part of it is facing the Sun. 🌕 Full Moon is when we can only see the side of the Moon that ...

This diagram easily breaks down the science of what's happening in space with the sun, moon, and Earth during the April 8 total solar eclipse.

The claim: Moon visible in the daytime proves Earth is flat. A Jan. 3 Instagram video shows what appears to be a cellphone video panning between the sun and moon in a cloudless sky in the daytime.

Astronomy: a view of London in 1748, with diagrams of an eclipse. Engraving. ... with spirals and other symbols corresponding to the Earth, moon, and Sun in their celestial dance.