References
Latest References

Best space board games 2025
By Jeff Spry last updated
Discover the best space board games as we've rounded up the very best in an expanse of fun and challenging games suitable for all budgets and game types.

The Fermi Paradox: Where are all the aliens?
By Daisy Dobrijevic last updated
Reference The Fermi Paradox seeks to answer the question of where the aliens are. After all, the universe is incredibly old, big and filled with potentially habitable planets.

How to debate a flat-Earther: Proven scientific arguments and strategies
By Paul Sutter last updated
Some people around the world believe our planet is flat. Here's the (surprising) truth about debating them.

Best space gifts 2025: Top gifts for space-loving kids and adults
By Alexander Cox last updated
The best space gifts cover a range of products and prices as there's a suitable treat for any space fan, from telescopes, Lego, star projectors and more.

Best headlamps for astronomy and stargazing 2025: The top picks for seeing at night
By Tantse Walter last updated
Buying Guide We've rounded up the best headlamps for astronomy and stargazing — we've considered functionality, comfort and cost.

Best neutral density filters in 2025
By Jamie Carter last updated
Buying Guide The best neutral density filters adjust the light transmitted into your camera, allowing for better nighttime photography.

The brightest planets in April's night sky: How to see them (and when)
By Joe Rao last updated
Reference Where are the bright naked-eye planets in April 2025 and when are the best times to view them?

Night sky, April 2025: What you can see tonight [maps]
By Chris Vaughan last updated
Reference Find out what's up in your night sky during April 2025 and how to see it in this Space.com stargazing guide.
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