481–500 of 554 results

Black Holes

Can Stars Form in our Galaxy's Center?

Observations of Milky Way’s chaotic center show hints of stars forming just two light-years away from our galaxy’s supermassive black hole.

People, Places, and Events

Scientists Share Absurdly Exciting News

This year's April Fools' was a productive day for astronomers — catch up on all the shenanigans.

Quasi-Periodic Oscillation (QPO)

Star-Shredders in Action

In the cover story of the June 2013 issue, Suvi Gezari takes us into the den of hibernating black holes, showing us what happens when a star tickles the nose of a powerful beast: the black hole rips the unlucky star apart, lighting a flare that can be seen from…

Trajectory Browser

Spacecraft and Space Missions

Mission Planning for the Public

A NASA web-based tool plots trajectories to your favorite planet or near-Earth object.


People, Places, and Events

Fifty Years of Quasars...And Fifty More?

As we celebrate the golden anniversary of quasars' discovery, some astronomers are pausing to question the direction of the field.


Interview with Exoplanet Expert Greg Laughlin

An artist's illustration of a potential exoplanet named Fomalhaut b. If it exists, this planet may have migrated to its current orbit.ESA / NASA / L. CalcadaIn the May 2013 issue of S&T, astrophysicist Greg Laughlin of the University of California, Santa Cruz — a leading expert on extrasolar planet…

Professional Telescopes

Alma Observatory Inaugurated

The future is now — the world’s most powerful radio telescope array was inaugurated yesterday.

Black Holes

Mystery Structure Around Black Hole

An X-ray flare revealed a bizarre black hole binary system, where a mysterious, moving structure blocks its visible light.

Solar System

Scorching Rain on the Sun

NASA's Solar Dynamic Observatory captures "coronal rain," a beautiful and mysterious phenomenon on the Sun.

Stellar Science

Baby Black Hole Discovered

Astronomers investigating a supernova remnant see nothing but swirls of gas. The lack of stellar remains means the explosion must have birthed a black hole only 1,000 years ago.

Stellar Science

Harbingers of Death: Predicting Supernovae

A massive outburst may give a month’s advance notice of when certain giant stars will go supernova. That’s not great for evacuation plans, but perfect for observers who want to catch a supernova in action.


Amateurs Help Hubble Unveil Spiral

Robert Gendler stitched together a stunning mosaic of spiral galaxy M106, filling in gaps in Hubble coverage with his own and Jay GaBany's ground-based observations.

Solar System

Water Once Flowed Under Mars's Surface

Fossilized wrinkles in impact craters suggest once again that water might once have flowed on Mars — this time, beneath the surface.

Pro-Am Collaboration

Amateurs Help Find Multi-Planet System

Amateur astronomers perform a crucial role in detecting exoplanets by a technique called microlensing, including the most recent discovery of a multiple-planet system.

FireFly approaches asteroid

People, Places, and Events

Asteroid Mining Gets Competitive

Deep Space Industries, Inc, announced plans to send a fleet of asteroid-prospecting to target asteroids in 2015 — and that’s just the first step in their ambitious proposal.

Milky Way

Mapping the Milky Way

New observations of spaghetti-thin clouds, faraway star-forming regions and mysterious magnetic fields are revealing the hard-to-see structure of the galaxy we call home.

Spacecraft and Space Missions

NuSTAR’s New Views

NASA’s newest high-energy X-ray telescope has released two stunning images of a stellar explosion and ravenous black holes.


Mapping Alien Atmospheres in 3D

A new technique charts the stormy weather of a brown dwarf 35 light-years away, allowing astronomers to probe deep into the atmosphere as well as across the cloud tops.


Beyond the Standard Model — Or Not

Scientists keep trying to disprove the Standard Model that governs modern physics. And they keep failing.


Planets Orbit Zombie Stars

Forget finding Earth 2.0 around a Sun-like star. Some astronomers aim for more exotic fare, searching for exoplanets around white dwarfs and pulsars. These studies could also teach us about the solar system’s fate.