461–480 of 1,385 results
NGC 3190 group / Hickson 44

Explore the Night with Bob King

Exploring Bright Galaxy Groups in Leo

Leo, the Lion, stands high in the southern sky during the early spring. We visit some of the constellation's brighter galaxy clumps then go asteroid hunting.

image brightness change example

Imaging Foundations with Richard Wright

How Focal Ratio Affects Your Astro Images

Understand focal ratio to improve your astrophotography.

an aerial shot of a large cement disc in the midst of trees

Cosmic Relief with David Grinspoon

Adiós, Arecibo

On the painful loss of an iconic Space Age observatory.

Perseverance

Astronomy in Space with David Dickinson

Perseverance's Fortnight of Firsts on Mars

NASA's Perseverance rover sends back postcards aplenty following its arrival on Mars as it prepares to explore Jezero Crater.

Battered Vesta

Explore the Night with Bob King

March — A Good Time to Visit Vesta

Dip into this easy guide to seeing the brightest asteroid, Vesta, and understanding what makes it unique.

Perseverance

Astronomy in Space with David Dickinson

Watch NASA's Perseverance Land in Jezero Crater on Mars

NASA’s Perseverance rover is providing us with amazing views of its new home., including an amazing video of the sky-crane descent.

IC 418 planetary nebula

Explore the Night with Bob King

A Deep-sky Hippity-hop through Lepus, the Hare

Snare a dozen bright double stars and deep-sky objects in the celestial Hare the next clear night. We also provide details on how to watch the potentially hazardous asteroid Apophis occult a star the night of February 21st.

Luminance image of M81 and M82

Imaging Foundations with Richard Wright

Tips for Imaging Galaxies from Your Backyard

You don't need a dark-sky location to shoot galaxies — you can capture them from your backyard with these tips.

Perseverance

Astronomy in Space with David Dickinson

A Timeline for NASA’s Perseverance Landing on Mars

NASA’s Perseverance rover is set to land on Mars tomorrow in a complex but well-tested procedure — its very own "seven minutes of terror."

Tianwen-1

Astronomy in Space with David Dickinson

China's Tianwen 1 Arrives at Mars

China’s ambitious mission to Mars, Tianwen 1, has arrived at the Red Planet and will attempt to land a rover on the surface in May.

Mars Hope

Astronomy in Space with David Dickinson

The United Arab Emirates' Hope Enters Orbit Around Mars

The United Arab Emirates Hope orbiter is the first in a series of spacecraft arriving at the Red Planet in the next week.

Daytime planet fest

Explore the Night with Bob King

Planets and Comets Can't Hide from SOHO's Eye

With the help of the Solar Heliospheric Observatory you can not only keep track of the planets in the daytime sky but maybe even discover a comet.

Apollo 15 site

Astronomy in Space with David Dickinson

Green Bank Tests New Planetary Radar

A newly installed planetary radar system on the Green Bank Radio Telescope will probe the solar system in detail.

Comet 67P/Churyumov-Gerasimenko

Explore the Night with Bob King

Comet Watch 2021

If you own an 8-inch or larger telescope you might see more than a dozen new and returning comets this year, including one potential naked-eye candidate.

Imaging Foundations with Richard Wright

In Astrophotography, Bigger Is Not Always Better!

Don't be intimidated by astrophotography equipment — modest equipment can do great things.

Juno Insight

Astronomy in Space with David Dickinson

NASA Extends Juno, InSight Missions

NASA has granted two key planetary missions extensions, so InSight and Juno will continue to return data from Mars and Jupiter, respectively, for years to come.

a blue and pink planet in half shadow against a black background

Cosmic Relief with David Grinspoon

Venus Surprise

Will phosphine be the “Mars rock” of our sister planet?

Deep-sky map Capella region

Explore the Night with Bob King

Foraging for Deep-sky Delights with Capella, the Goat Star

We explore deep-sky riches within a stone's throw of Capella, one of the season's brightest stars.

Artemis-1

Astronomy in Space with David Dickinson

Space Missions to Watch in 2021

The coming year will feature three space missions arriving at Mars, the launch of SLS and James Webb, and much more.

Imaging Foundations with Richard Wright

A Free Tool for Lucky Imaging

Check out this free astrophotography software package that'll make processing your lucky images — especially of the Sun and Moon — a snap.