References
Latest References

Space calendar 2025: Rocket launches, skywatching events, missions & more!
By Space.com last updated
Reference Keep up with all the rocket launches, astronomical events and mission milestones for 2025 with our space calendar.

Asteroid belt — What it is, where it is and how it formed
By Nola Taylor Tillman last updated
Reference Most asteroids orbit between Mars and Jupiter in the main asteroid belt. But some space rocks stray out of the main belt and threaten Earth.

What is the moon phase today? Lunar phases 2025
By Tariq Malik, Daisy Dobrijevic last updated
Reference See what moon phase it is tonight and find out when you can see the rest of the moon phases for 2025.

'Doctor Who' spin-offs ranked: From K-9 and Daleks! to 'Class', 'The Sarah Jane Adventures' and 'Torchwood'
By Richard Edwards published
As 'The War Between the Land and the Sea' rages on, we look back at the previous TV shows to explode out of the Whoniverse.

The summer solstice: What is it and when does it occur?
By Daisy Dobrijevic last updated
Reference The summer solstice marks the start of astronomical summer and the longest day of the year. Here we explore when the summer solstice occurs and why.

Perihelion: What is it and when does it occur?
By Tereza Pultarova last updated
Reference Perihelion is the point at which an orbiting body is closest to the sun. The word comes from Greek and literally means around (peri) the sun (helios).

When is the winter solstice and what happens?
By Robert Lea last updated
Reference Winter Solstice has long marked a time of rebirth, behind it are fascinating astronomical events.

New moon calendar 2025: When is the next new moon?
By Daisy Dobrijevic last updated
Reference Discover what a new moon is and when the next new moon will occur with our new moon 2025 guide.
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