This Sunday, we're looking at the sun. Not directly at it though! We'll be talking about a syzygy, the solstice, and why we see eclipses - sometimes. We'll also have a go at spotting the International Space Station as it flies overhead - visit https://spotthestation.nasa.gov/ to get times for your location.

You'll need to head outside at 5pm on Sunday June 21 to spot the sunset and the station.

Music this week:

Dreamy Flashback, by Kevin MacLeod

Light years & Eternity, by Stellardrone