3301–3320 of 6,731 results

Solar System

The Moon’s Mysterious Twilight Dust Clouds

Observations from NASA’s Lunar Atmosphere and Dust Environment Explorer (LADEE) have rekindled interest in dust clouds seen along the Moon’s day-night terminator.

Would Pluto's surface look like this?

Solar System

It's Always "Pluto Time" Somewhere

Sunlight on Pluto is only a thousandth as strong as it is here on Earth. With careful timing, you can experience what it'd be like to stand on Pluto at noon.

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.

http://www.esa.int/spaceinimages/Images/2013/12/Philae_on_the_comet_Front_view

Space Missions

Comet Lander Philae Phones Home

After seven months of electronic hibernation, Philae has awakened on the surface of Comet 67P/Churyumov-Gerasimenko and resumed relaying its data to Earth.

Stellar Science

A Budding Nebula May Hatch a Butterfly

Super-sharp imaging confirms that the nearby red giant star L2 Puppis is forming a tiny bipolar nebula as it comes to the end of its life.

Celestial News & Events

Watch the Moon Occult Uranus Live

On June 11, 2015, the moon will occult Uranus. Here's a webcast.

glass on Mars

Astrobiology

The Glint of Martian Glass

Scientists have detected glass in Martian craters, created by the fierce heat of impacts that melted the Red Planet’s surface.

Cosmology

Between Galaxies: Lonely Supernovae

Researchers confirm that three solitary stars have gone supernovae in intergalactic space.

Path of Pluto in 2015 (wide field)

Night Sky Sights

See Pluto in 2015

It’s been a fantastic year for Pluto, and it’s only going to get more so. What better time to make your first (or second!) attempt at spotting the dwarf planet? Read on for a few tips to help you locate this dim object in the summer sky.

Kapteyn b illustration

Exoplanets

Kapteyn b: Exoplanet or Illusion?

Recent research casts doubt on whether nearby Kapteyn b, a supposed super-Earth circling in its star’s habitable zone, is a planet at all.

Ceres from orbit

Solar System

Asteroid Tour: Fly Over Ceres

Visit the dwarf planet Ceres in this video animation created from images taken by NASA’s Dawn spacecraft.

Astronomy & Observing News

Visit Iceland and Shoot the Northern Lights!

Sky & Telescope's third annual trip to Iceland, this time accompanied by Equipment Editor Sean Walker, provides a fantastic opportunity to photograph the aurora borealis.

Hyperion

Solar System

Close-Up of Saturn’s Moon Hyperion

On May 31st, the Cassini spacecraft flew by Saturn’s funky moon Hyperion. The resulting images highlight the moon’s unusually pocked surface.

Astronomy & Observing News

Get Started Right with Your First Telescope

Sky & Telescope's introductory videos walk you through all aspects of buying, using, and caring for your first telescope.

The Chury Comet

Solar System

New Insights From Rosetta's Comet Mission

Rosetta continues to help astronomers better understand the way comets form and how they interact with the universe around them.

Path of Uranus in 2015 (wide field)

Night Sky Sights

Uranus and Neptune in 2015

This article gives directions for finding Uranus and Neptune from June 2015 through March 2016.

Astronomy & Observing News

Hold Worlds in Your Hand

Ever wanted to own one — or even all — of Sky & Telescope’s globes? Here’s your chance: Through this Sunday, June 7th, you can take 40% off the price of every globe you purchase.

Pluto

Solar System

Pluto's Perplexing Moons

New data on Pluto’s moons show that the system is more bizarre than previously thought.

solar sibling in Hercules

Astronomy & Observing News

Through Sunday: Get That Star Atlas Cheap!

Most of the things that are visible in any telescope, big or small, are barely visible in that telescope. You can't pick them up just by sweeping. You have navigate to the precise spot.

Science instruments on New Horizons

Solar System

What Will New Horizons See — and When?

In his third "insider blog" about the New Horizons mission, principle investigator Alan Stern offers a look at the timetable for getting results from the historic flyby.