References
Latest References
Best drones 2024: Expand your aerial horizons with the best drones
By James Abbott last updated
Here's our guide to the best drones available today — find the perfect drone to suit your needs, whether you're a pro drone pilot or new to flying.
What is an equinox?
By Sarah Wild last updated
Reference Equinoxes occur twice a year when the sun is directly above the equator, and signal herald the beginning of spring and autumn.
Leica binocular deals: The lowest available prices 2024
By Ian Evenden last updated
Leica binocular deals may be a rare sighting, but we've rounded up the lowest prices currently available.
Best zoom lenses 2024: The best picks from Canon, Sony, Nikon and more
By Kimberley Lane last updated
Buying Guide Our guide to the best zoom lenses for capturing detailed shots of distant objects, with options to suit a range of cameras and photography styles.
Best photo editing apps for astrophotography 2024
By Jase Parnell-Brookes last updated
Buying Guide The best photo editing apps for astrophotography can reduce noise, boost colors and make your astro images pop — here's a roundup of our favorites.
Kitt Peak National Observatory: Facts, research and visitor information
By Rebecca Sohn last updated
Kitt Peak National Observatory, located about 56 miles from Tucson, Arizona, boasts two dozen telescopes for professional research, plus an extensive menu of programs for public visitors.
20 trailblazing women in astronomy and astrophysics
By Elizabeth Howell last updated
From discovering planets to following comets, women all over the world play a crucial role in astronomy.
March full moon 2024: The Worm Moon gets eclipsed
By Jesse Emspak last updated
Reference The full moon of March 2024, the Worm Moon, will experience a penumbral lunar eclipse as it passes through the outer part of Earth's shadow.
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