Buying guides

Buying guide We have tried and tested dozens of air purifiers over the years, measuring their accuracy and speed in removing airborne pollutants — here's everything we found.

The best smart telescopes offer a supremely easy way of viewing the night sky.

The best cameras for aspiring photographers who want to take a step up from their smartphones — whether you want to photograph the night sky, wildlife or the world around you.

Encourage children to love science by showing them the world in miniature with some of the best microscopes for kids.

Discover a microscopic world with one of the best microscopes for students and young scientists, without emptying your wallet.

The best binoculars for kids should be lightweight, compact, and easy to handle — explore top picks before Amazon Prime Day arrives next week.

Buying Guide Our pick of the best power banks and power stations to keep you energized away from home.

BUYING GUIDE The best star projectors bring the wonders of the cosmos into your home — find the best models here.

The best telescopes offer an unparalleled view of the cosmos, and we've gathered our favorites.

BUYING GUIDE The best astrophotography cameras require excellent low-light capabilities — check out our favorite models.