161–180 of 416 results

Explore the Night with Bob King

Comets to Catch in 2019

We peek ahead to see what comets await in 2019. Bright ones will be sparse, but several nice objects, including Comet Iwamoto (C/2018 Y1) and Comet Africano (C/2018 W2), will keep things lively.

Explore the Night with Bob King

Your Guide to January's Supermoon Total Lunar Eclipse

The first full Moon of 2019 meets Earth's shadow in a widely visible total eclipse on the evening of January 20–21. Here's a guide on what to expect.

Explore the Night with Bob King

Start 2019 with the Quadrantid Meteor Shower

Set aside your qualms about the cold and cash in on the Quadrantids, one of this year's best meteor showers.


Venus Occults a Star and Mercury Joins Jupiter on the Winter Solstice

Bring in winter with a bang with a beautiful, close conjunction and a rare planet-star occultation.

Celestial News & Events

Chasing Comet 46P/Wirtanen as the Moon Looms

Learn how chase away the Moon to keep Comet 46P/Wirtanen in a dark sky. Here's an update on the comet's progress and what to look for in the coming nights.

Explore the Night with Bob King

Spend an Hour with the Geminid Meteor Shower

Move over 46P/Wirtanen, it's time for the Geminids, the richest meteor shower of the year.

Mars does do-si-do with Neptune

Explore the Night with Bob King

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.

Diamond in the sky

Space Satellites

SpaceX Launches Orbiting "Sculpture in the Sky" / Comet Update

An art sculpture achieves orbit, 46P/Wirtanen becomes a naked-eye comet, and C/2018 V1 makes one last good pass.

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.

A star goes poof!

Explore the Night with Bob King

Seeking Cas A, the Ghostly Remains of a Mysterious Supernova

We still don't know for sure if anyone saw the supernova explosion in Cassiopeia around 1680, but there's no question we can observe what remains of it today.

Extra helping

Explore the Night with Bob King

Gobble Up a Rare Thanksgiving Full Moon

This week, we give thanks for all the good things in life including a rare event — a full Moon on Thanksgiving. Make it your dessert after the big meal.

A Colorful problem

Explore the Night with Bob King

Ducks in Disguise or How Stars Hide Their True Colors

Do star clusters form all at once or over several generations? A team of astronomers finds an answer among the spinning stars of an amateur favorite, the Wild Duck Cluster. 

Explore the Night with Bob King

Exoplanets for Autumn Evenings

Exoplanets pepper the night sky. We may not be able to observe them directly, but we can use their host stars as surrogates to envision them in our mind's eye.

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.

Explore the Night with Bob King

Three Upcoming Sky Events We Can All Share

Comets, meteors, and Moon: Share the night sights that are coming our way!

Variable Stars

Trick-or-Treat with the Seven White Dwarfs

In the Halloween spirit, we pay a visit to the cosmic dead, those tiny stars that should just fade away but always seem to be causing trouble instead.

Double Stars

Double Your Deep-Sky Pleasure with "Two-in-the-View"

Once you've seen two, a single won't do. Enjoy this selection of multiple deep-sky objects visible in the same field of view of your telescope.


Observing Earth from the Moon

Ever wondered what it would be like to see the Earth from the Moon? Join Bob King as he explores this from the perspective of the Apollo 17 astronauts.

Explore the Night with Bob King

How Dark Is Your Night Sky?

Traditional and digital tools can help you learn the naked-eye magnitude limit of your sky and find out if the darkness has changed at your observing site.

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.