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.
Some of the universe’s most luminous galaxies are also the most mysterious. New simulations shed light on how these galaxies formed.
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. Sky & Telescope editors had been looking forward to last night's total lunar eclipse for a multitude reasons. For...
Scientists have confirmed that water-soaked salts likely create dark seasonal lines on Mars.
On the night of September 27–28, the full Moon will plunge completely through Earth's shadow for the last time until January 2018.
Visit SkyandTelescope.com on the night of September 27th to watch our exclusive webcast of the last total lunar eclipse anywhere until 2018.
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.
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.
Astronomers think a bright X-ray source in the galaxy NGC 1313 is a mid-size black hole.
Observations of two cool white dwarfs show irregular outbursts in the stars’ otherwise steady rhythm of pulsations.
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.
Look to your local astronomy club for a day and night of observing activities for Fall Astronomy Day and International Observe the Moon Night.
Astronomers are investigating a new technique for finding close pairs of supermassive black holes, and they might have found one in the nearest quasar.
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.
Some of the most stunning views of Sunday's partial solar eclipse didn't come from Earth.
Astronomers have detected waves working together in the solar atmosphere, potentially heating the gas through turbulence.
Does your version of stargazing involve pointing your telescope at the Sun? With the right equipment, you can aid a project that aims to catch a solar flare in the act of erupting. The observing campaign is coming up soon: September 19 - 27, 2015.
NASA's New Horizons spacecraft has returned high-resolution, richly detailed images of Pluto and its moon Charon, revealing surfaces that are confounding in their complexity.
Residents of southern Africa get to watch the Moon cover part of the Sun not long after (or during) sunrise on Sunday, September 13th.
A new technique that relies on identifying stellar twins yields a novel way to measure the distances to stars.
The latest image from NASA's Dawn spacecraft reveals structure in the bright spots on the asteroid 1 Ceres.
Researchers on the ground have combed through a trove of images taken by orbiting astronauts to reveal unprecedented details about light pollution streaming from Earth's major cities.
A small body known as 2014 MU69, found by the Hubble Space Telescope barely a year ago, will be the next destination for NASA's New Horizons spacecraft.
A collaboration of amateur and professional astronomers has uncovered a rare variety of eclipsing binary star - and a supernova in the making.
This month's stargazing features pretty planetary treats in the eastern sky before dawn — and the last total lunar eclipse visible until 2018.