1–20 of 37 results

Asteroids

Chase a Potentially Hazardous Asteroid As It Flies by Earth

Break out your binoculars or a small telescope, we've got a busy week ahead! Watch as a bright asteroid approaches Earth, the Moon steals a star, and Comet ATLAS's last hurrah.

Mini-moon discovered

Celestial Objects to Observe

Earth Has A Mini-Moon — But Not for Long!

Two astronomers discovered a temporary mini-moon captured by Earth — but it's about to win its freedom.

Incoming point

Celestial News & Events

"Potentially Hazardous" Asteroid Is Headed For Your Telescope

A potentially hazardous asteroid makes a flyby of Earth this Friday, offering amateurs with modest telescopes a chance to ride along.

Trojan asteroids

Celestial Objects to Observe

Be a Warrior — Tackle a Trojan Asteroid

You've seen Jupiter and its four brightest moons. Now meet the rest of the family — the Trojan asteroids.

Protoplanet of intrigue

Asteroids

Pop in on Pallas and Iris Tonight

Break out your binoculars or telescope the next clear night for a peek at the bright asteroids Pallas and Iris, both at opposition this spring. 

Celestial Objects to Observe

Vesta Gets Close and Bright

Vesta, the brightest asteroid, puts on one of its best shows ever in June, when it shines enough to see without optical aid.

Amalthea occultation chords

Asteroids

Asteroid 113 Amalthea to Occult Star

Here's an opportunity for amateur astronomers to reveal more about asteroid Amalthea's satellite.

Explore the Night with Bob King

Asteroid 3200 Phaethon: Geminid Parent at Its Closest and Brightest!

The parent asteroid of next month's Geminid meteor shower, 3200 Phaethon, is about to make a historically close flyby. Get ready to watch it race across the sky.

Solar System

Asteroid Florence Pays Earth a Visit

Florence, one of the largest Earth-approaching asteroids, gets close enough to see in a small telescope this week and next. Here's how to find it.

Just Saying Hello

Solar System

See a Potentially Hazardous Asteroid From Your Backyard

Get ready for 2014 JO25, the biggest asteroid to fly this close to Earth since 2004. Good news — even a 3-inch telescope will show it! Update: See below for a radar image and animation of 2014 JO25 captured by NASA's Goldstone Solar System Radar on April 18, 2017. Every week, a…

Celestial Objects to Observe

Let's Get Serious About Ceres

We pay a visit to Ceres, now the apple of the Dawn Mission's eye, as it creeps through Sagittarius this month

Non-threatening, favorable pass

Celestial News & Events

See Icarus Wing By Earth This Week

It's no myth. Icarus makes a rare flyby of Earth this week. Here's how to see it in your telescope and live online.

Explore the Night with Bob King

Do We Have Pieces of Pallas on Earth?

Chips of Pallas grace meteorite collections around the world. See where they all came from when the asteroid reaches opposition this spring.

Paths of Ceres and Vesta

Celestial Objects to Observe

Super-close Pairing of Ceres and Vesta

Two bright asteroids now appear extremely close to one another in the evening sky. Here's how to spot them in binoculars or a small telescope.

Celestial Objects to Observe

Ceres and Vesta in 2014

The two brightest asteroids are very close to each other in the sky in 2014, fitting in a single field of view through binoculars and some telescopes.

Asteroids

See Ceres at Its Best for 2012

Ceres, the biggest asteroid and brightest dwarf planet,shines at magnitude 6.9 or brighter from December 12-25.

Celestial Objects to Observe

Ceres and Vesta: July 2012 - April 2013

The two brightest asteroids are close to each other in late 2012 and early 2013. Moreover, they're traversing one of the most interesting areas in the night sky.

Asteroids

Ceres and Vesta in 2011

The two brightest asteroids are in fine view for binoculars or a telescope. Here are instructions and charts to find them.

Asteroids

Vesta in 2010

Vesta shines at magnitude 7 or brighter through mid-May 2010.

Asteroids

The Benson Prize

If saving the Earth from destruction isn't enough incentive to find near-Earth asteroids, there's a prize for the amateur who discovers one.

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