The Moon’s orbit about the Earth is not perfectly circular, so that at different times the Moon can be slightly closer or further away than usual. This composite shot shows the progress of an annular eclipse in May 2013.

The sun will look like a ring of fire above some remote parts of the world next Tuesday (April 29) during a solar eclipse, but most people around the world won’t get a chance to see it.

Whereas lunar eclipses occur only when there’s a full moon, and solar eclipses only happen during a new moon. Half the world saw a lunar eclipse during the full moon on April 15. When a lunar eclipse occurs, it usually means there is also a solar eclipse at the preceding or following new moon.

Read More: Solar Eclipse Will Transform Sun into ‘Ring of Fire’ Next Week