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what-time-is-it-on-mars https://www.astronomy.com/issues/2023/november-2023/ November 2023 Issue Celebrate 60 years of quasars, explore exclusive 3D stereo images from Mars, and delve into the different types of twilight. Plus, the newest from JWST! https://www.astronomy.com/uploads/2023/10/ASY-SK1123_03.jpg InStock USD 1.00 1.00 robotic-spaceflight solar-system article ASY 2023-11-21 2023-11-20 134854
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November 2023 Cover of Astronomy

November 2023

The world's best-selling astronomy magazine offers you the most exciting, visually stunning, and timely coverage of the heavens above. Each monthly issue includes expert science reporting, vivid color photography, complete sky coverage, spot-on observing tips, informative telescope reviews, and much more! All this in an easy-to-understand, user-friendly style that's perfect for astronomers at any level.
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A composite of two different times, as seen by Curiosity on Mars
Robotic Spaceflight, Solar System

What time is it on Mars?

It may not look like much, but capturing photons from the distant quasar 3C 273 is one of the most awe-inspiring observations you can make with a small telescope.
Deep-Sky Objects

Target acquired: Observe Quasar 3C 273

The assembled scope was small, light, and essentially useless.
Telescopes and Equipment

Are cheap telescopes worth it? The answer is no.

Illustration of a kilonova
Cosmology

Is gravity instantaneous?

A spectacle of sparkling stars and shining planets dance in hues of yellow, orange, and blue, as if creating a painting made by nature during the transition from civil twilight to nautical twilight.
The Sun

Discover the three kinds of twilight

Stunning celestial sights such as the Milky Way under clear skies require absolutely zero magnification at all.
Observing Basics

Strange Universe: Zero-power love affair

A close-up image of M51 properly calibrated.
Observing Basics

Observing Basics: Coming to terms

The Large Hadron Collider at CERN
Cosmology

Does E = mc^2 hold true for dark matter and dark energy?

Mars is a dynamic world that continues to intrigue us. This image, captured by the Hubble Space Telescope, shows the planet wreathed in late-afternoon clouds.
Robotic Spaceflight

Experience Mars in 3D

The author’s photo-illustration attempts to capture the unusual appearance of totality, as seen during the April 20, 2023, hybrid solar eclipse near Com, East Timor.
The Moon, The Sun

Secret Sky: A topsy-turvy eclipse

Constellation Perseus
Deep-Sky Objects

Binocular Universe: Heroic treasures

Jupiter and its Galilean moons
Observing

Sky This Month: November 2023

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