3181–3200 of 6,712 results
Mars

People, Places, and Events

Explore Mars in Fiction and Reality

The incredibly popular novel, and now movie, The Martian draws people to the Red Planet with realistic detail. Explore the Red Planet not just in fiction but in reality with our Mars globe and map.

Charon's dynamic terrain

Solar System

Charon: Cracked, Cratered, and Colorful

A fresh batch of high-resolution images from NASA's New Horizons spacecraft shows that Charon, Pluto's largest moon, has endured a lot.

New Horizons in Kuiper Belt

Solar System

New Horizons: A Billion Miles to 2014 MU69

Planetary scientist Alan Stern continues his exclusive series of blogs with details of what awaits the New Horizons spacecraft when it reaches its next objective.

Moon-Jupiter-Mars on October 9th

Celestial News & Events

Tour October's Sky: Predawn Planet Pileup

Early risers will be treated to wonderful groupings of bright planets, and evening sky offers excellent stargazing as well.

Jets from Comet 67P seen by Rosetta

Solar System

Clocking Water's Escape from Comet 67P

Thanks to the Rosetta spacecraft, researchers can follow the cycle of water escaping from the nucleus of Comet 67P/Churyumov-Gerasimenko.

composition of Ceres' surface

Solar System

False-color Maps of Ceres

New maps from NASA’s Dawn spacecraft reveal more about both the landscape and composition of the largest asteroid.

Near miss

Celestial News & Events

Moon Hides Hyades, Occults Aldebaran Friday

After a late-night ramble through the Hyades cluster, the waning gibbous Moon will cover up the bright star Aldebaran for observers across North America Friday morning.

Simulated Submillimeter Galaxy

Galaxies

Making the Brightest, Rarest Galaxies

Some of the universe’s most luminous galaxies are also the most mysterious. New simulations shed light on how these galaxies formed.

Celestial News & Events

A Look Back at the Total Lunar Eclipse

Call it a blood Moon, supermoon, harvest Moon, a portent of the apocalypse, or just a regular ol' total lunar eclipse — for those who caught a glimpse, last night's celestial event did not disappoint.

Hale Crater's dark streaks

Astrobiology

Waterlogged Salts on Mars

Scientists have confirmed that water-soaked salts likely create dark seasonal lines on Mars.

Total lunar eclipse on Sept. 27-28, 2015

Celestial News & Events

Ready for Tonight's Total Lunar Eclipse?

On the night of September 27–28, the full Moon will plunge completely through Earth's shadow for the last time until January 2018.

Partial lunar eclipse

Celestial News & Events

Watch September's Lunar Eclipse - Live Webcast!

Visit SkyandTelescope.com on the night of September 27th to watch our exclusive webcast of the last total lunar eclipse anywhere until 2018.

Milky Way Center in X-rays

Black Holes

Is the Milky Way's Black Hole Feeding?

The answer is a tantalizing maybe. Astronomers are investigating whether an increase in the number of flares from Sgr A* are due to the recent close passage of a dusty object known as G2.

USGS Lunar Map Tycho altimetry

Solar System

Beautiful, Informative Maps of the Moon

A pair of poster-size lunar maps, produced by the U.S. Geological Survey, let you roam around the Moon's surface and explore the lunar landscape.

galaxy NGC 1313

Black Holes

New Mid-size Black Hole

Astronomers think a bright X-ray source in the galaxy NGC 1313 is a mid-size black hole.

white dwarf illustration

Stellar Science

White Dwarf Stars with Hiccups

Observations of two cool white dwarfs show irregular outbursts in the stars’ otherwise steady rhythm of pulsations.

Dramatic panorama of Pluto

Solar System

New Pluto Panorama Shows Jumbled Peaks

A striking, just-released image from NASA's New Horizons mission shows a crescent Pluto panorama. Dramatic backlighting accentuates the dwarf planet's surprisingly rugged mountains.

Looking through a telescope at a star party

Observing

Astronomy Day + International Observe the Moon Night = Weekend of Fun

Look to your local astronomy club for a day and night of observing activities for Fall Astronomy Day and International Observe the Moon Night.

Supermassive black hole binary

Black Holes

Does the Nearest Quasar Host a Black Hole Binary?

Astronomers are investigating a new technique for finding close pairs of supermassive black holes, and they might have found one in the nearest quasar.

gas spiraling toward binary black hole

Black Holes

New Evidence for Black Hole Binary

Astronomers have confirmed that the quasar PG 1302-102 is probably a binary supermassive black hole, its members less than a tenth of a light-year apart.