Tonight's Sky

Tonight's Sky — Change location



Tonight's Sky — Select location

Tonight's Sky — Enter coordinates

° '
° '


Your online destination for news articles on planets, cosmology, NASA, space missions, and more. You’ll also find information on how to observe upcoming visible sky events such as meteor showers, solar and lunar eclipses, key planetary appearances, comets, and asteroids.

Friday, March 24, 2017

Astronomers spot a runaway quasar

Supermassive black holes reside at the centers of most galaxies — or do they? A new detection by the Hubble Space Telescope (HST) points to an active supermassive black hole in the process of fleeing its galaxy. The astronomers who spotted it s...

NASA’s NuSTAR solves the mystery of the Andromeda galaxy’s high-energy X-rays

The Andromeda galaxy (M31) is the Milky Way’s largest neighbor, as well as the largest member of our Local Group. A spiral galaxy much like our own, astronomers often use Andromeda as a proxy to study the Milky Way, since we can’t simply ...
Thursday, March 23, 2017

How exoplanets can violently die

Like an aging relative, a planet can suffer a slow decline, spiraling gradually into its star. Or its death can be quick, a relative eyeblink as its sun abruptly changes. Understanding these deaths can help scientists better glimpse the life and evol...

Launch Ladies children’s book highlights the women behind space exploration

The idea of space exploration has captured the hearts and minds of humankind since long before NASA put a man on the Moon. Following this amazing accomplishment, the reality of human spaceflight has continued to fascinate and inspire in the ensuing d...
Wednesday, March 22, 2017

Rosetta spots major changes on comet 67P

Planets and moons aren’t the only geologically active places to be found in the solar system — recent data returned from the European Space Agency’s Rosetta mission highlight the fact that comets can become geologically active, too....

New study finds martian volcano’s last eruption

The rough estimate for the dinosaurs’ extinction was about 50 million years ago, but NASA reveals that may not be the only thing that disappeared around that time. New research from NASA shows that Arsia Mons, a large volcano just south of Ma...
Tuesday, March 21, 2017

Is it time to restore Pluto’s planetary status?

In August 2006, Pluto lost its status as the solar system’s ninth planet when the International Astronomical Union (IAU) reclassified it as a “dwarf planet.” The ruling, though controversial among both astronomers and the general pu...
Monday, March 20, 2017

New theory suggests Mars had rings in the past

Mars has always been identified as "the Red Planet," but a new theory suggests Mars may be able to add another identifier. A recent theory by NASA-funded scientists at Purdue University in Lafayette, Indiana, that was published in the Nature Geoscie...
Thursday, March 16, 2017

Lakes on Titan may fizz with nitrogen bubbles

Titan’s hydrocarbon lakes may occasionally erupt with dramatic patches of bubbles according to a recent study funded by NASA. Researchers at NASA’s Jet Propulsion Laboratory (JPL) simulated Titan’s conditions and found that changes...
Wednesday, March 15, 2017

X-ray observations identify a white dwarf whipping around a black hole

The globular cluster 47 Tucanae was just recently in the news for showing evidence of an intermediate-mass black hole. Now, this bright southern cluster is once again making headlines for hosting the tightest white dwarf-black hole binary ever identi...

Exploring Titan with aerial platforms

This article originally appeared on Universe Today. Last week, from Monday Feb. 27th to Wednesday March 1st, NASA hosted the “Planetary Science Vision 2050 Workshop” at their headquarters in Washington, DC. During the course of the many ...

This is what Kepler sees when it stares at TRAPPIST-1

Kepler has found thousands of planets, but it’s done it all with fairly simplistic technology: a photometer that images each star as a few pixels and waits for the light to change in those pictures, signalling a planet moving across. NASA has...

There’s a supernova occurring right now in NGC 5643

When most people hear the word supernova, they envision a massive star reaching the end of its life and exploding outwards to leave a ghostly remnant in its place. This is called a Type II supernova — the spectacular Supernova 1987A, which rece...
Tuesday, March 14, 2017

New technology finds ‘lost’ spacecraft

Using optical telescopes to find small spacecraft or space debris around the Moon can prove quite difficult due to the glare of the Moon, but a new technology application may have made the process much easier. Scientists at NASA’s Jet Propulsi...
Monday, March 13, 2017

Building the universe’s first supermassive black holes

Unlike their stellar-sized cousins, which form following the collapse of a massive star, the supermassive black holes at the centers of galaxies are simply too large to result from a single star’s death. Even with the recent confirmation of int...


Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter.


Click here to receive a FREE e-Guide exclusively from Astronomy magazine.

Find us on Facebook