581–600 of 1,469 results
Mars does do-si-do with Neptune

Celestial News & Events

Mars and Neptune Have a Close Shave

Want to find Neptune the easy way? Just point your binoculars or telescope at Mars the next few nights, when the two planets will be in close conjunction.

Moon + Aldebaran Dec. 2018 300p

Celestial News & Events

Tour December's Sky: Morning Planets

December's astronomy podcast urges you to get outside early to gaze on dazzling Venus — then Mercury, then Jupiter — crowding the eastern sky before dawn.

Celestial News & Events

Supernova Discovered in the Bright Galaxy M77

A new supernova in the bright galaxy M77 in Cetus is within range of amateur telescopes. Here's how to find it.

Comet Triple Crown

Celestial News & Events

Comet 46P/Wirtanen Approaches Earth

On December 16th, the comet will pass within 12 million kilometers of Earth and should brighten to about 3rd magnitude, though the diffuse coma and a nearly full Moon will make observations difficult.

Celestial News & Events

The Case of the Vanishing Nebula

Now you see it, now you don't. McNeil's Nebula in Orion has disappeared, thanks to a drastic reduction in brightness from the protostar that usually provides illumination. 

Celestial News & Events

Amateur Don Machholz Discovers His 12th Comet! (Updated)

Arizona comet hunter Don Machholz did it again! He discovered his 12th comet only two mornings ago. Set your alarm, grab your scope, and take a look.

Moon, Mercury, and Jupiter in early Nov 2018

Celestial News & Events

Tour November's Sky: Cassiopeia's Clan

This month's astronomy podcast takes you on a tour of a dysfunctional "royal family" in the northern sky — along with tips for viewing two meteor showers.

Celestial News & Events

Get Ready for International Observe the Moon Night

Fascinated by our Moon? Want to know more about it? Join fellow lunar enthusiasts on Saturday, October 20th, for International Observe the Moon Night!

Celestial News & Events

The Outer Planets Move In, plus an "Old Moon" Observing Challenge

As the bright planets march westward, Uranus and Neptune become the fresh new faces of fall. And if you've never seen an ultra-thin lunar crescent, here's your chance.

Crown in the western sky

Celestial News & Events

R Coronae Borealis Awakes and Pluto Blocks a Star

Sometimes, it's just as exciting to watch a celestial object fade or disappear as it is to see it explode. We celebrate the "return" of a mysterious variable star and prepare for Pluto to occult a star.

Celestial News & Events

Catch the Perseid Meteor Shower at Its Peak

Plan for optimal conditions for the year’s Perseid meteor shower, early in the mornings of August 12th and 13th.

Mars-Saturn-Moon in August 2018 300p

Celestial News & Events

Tour August's Sky: Perseid Time!

As told in this month's astronomy podcast, August offers excellent viewing conditions for the always-flashy Perseid meteor shower — and a chance to see four bright planets at once.

Lunar eclipse

Celestial News & Events

Red Moon Meets Red Planet in Longest Total Lunar Eclipse of the Century

Not only will the Moon will be totally eclipsed this Friday, but Mars will be at opposition and shine in tandem with the red Moon all night!

Celestial News & Events

See Mars at Its Best Since 2003

Wonder what to see now that Mars is at its biggest and brightest? Here are expert tips for when, where, and how to look.

Celestial News & Events

PanSTARRS Comet, Rocked by Outburst, Goes Green

Comet PanSTARRS (C/2017 S3) has erupted again! Now bright enough to see in binoculars, it might become a naked-eye object if it survives until perihelion.

Celestial News & Events

What Can Lunar Eclipses Do For Science?

On the night of July 27, 2018, the longest total lunar eclipse for the next 105 years will be visible across parts of Europe, Africa, Asia and Australia. Six months later, on January 20, 2019, there will be the 'Great American' lunar eclipse, where totality is visible across all 50 states.

Celestial News & Events

Observers Anxious for Dust to Settle as Mars Opposition Approaches

With opposition only weeks away, will the current global dust storm finally break? We look at the prospects.

Moon-Venus-Mercury on July 14-15

Celestial News & Events

Crescent Moon and Venus Will Bedazzle on Sunday

Hanging dramatically in the west during twilight next Sunday evening (July 15, 2018) will be a bright “star” and crescent: Venus and the Moon. The cosmic couple will be quite the eye-catcher if your sky is clear.

Aldebaran Occultation

Celestial News & Events

Don't Miss Aldebaran's Last Occultation Till 2033

The last and one of the most picturesque occultations of Aldebaran by the Moon happens on Tuesday morning, July 10. Catch it or wait 15 years for the next!

One explosion begets another

Celestial News & Events

Fireworks, Planets, Comets, a Nova — July's Got it All!

July's a busy month for skywatching. Not only are five bright planets in view, but three comets and a newly-discovered nova are also observable. And it all starts with a bang on Independence Day.