4141–4160 of 6,715 results

Celestial News & Events

Yet Another Nova in Sagittarius

For the fourth time this year, a star has erupted into prominence in the same constellation. This one is relatively bright and easy to spot from your backyard.

New nova in Sagittarius

Resources and Education

Nova in Sagittarius: Nova Sagittarii 2012 No. 4

A nova visible in good binoculars was spotted July 7, 2012, by observers in Japan.

Astronomy & Observing News

Impossibly Aligned Galaxies

Astronomers have found an alignment of galaxies along our line of sight that’s so rare, it ought to be impossible. Is it just luck — or does it tell us something more?

Celestial News & Events

Predawn Treats for Early Risers

If you can get yourself out of bed early, spectacular predawn vistas await your eyes, binoculars, and telescope over the next week.

Astronomy & Observing News

Why Higgs Discovery Deserves the Hype

Physicists using the Large Hadron Collider announced yesterday their discovery of a particle consistent with the Higgs boson. The find was expected, but it's still a big deal.

Stellar Science

Baby Star's Hot Birthmarks

Astronomers have pinpointed the origin of high-energy X-rays coming from a baby star.

Cosmology

Dark-Matter Thread Revealed

Scientists have found a dark-matter filament, a strand of the cosmic web that connects clusters of galaxies. It's the first time an individual filament has been detected and is among our first observational glimpses of the universe’s largest structures.

Solar System

Titan's Latest Twist: A Hidden Ocean

Saturn's biggest moon already boasts a dense atmosphere, vast dune fields, and lakes full of hydrocarbons. Now scientists have evidence for a deep ocean beneath its icy crust.

Space Missions

Waves Might Heat Solar Atmosphere

Astronomers are working to unravel the mystery of the Sun's superhot corona, but new work implicating magnetic waves isn't the final word on the matter.

Sentinel spacecraft in orbit

Astronomy and Society

B612 Debuts Its Asteroid-Seeking Sentinel

Astronomers warn that it's not a question of "if" Earth will be hit by an asteroid, but "when." If a private group of space veterans has its way, a Sun-orbiting spacecraft will find threatening objects decades before they can strike us.

Astronomy & Observing News

A Glitch in Time

On June 30, 2012, the world's official timekeepers will add a leap second for the first time in 3½ years.

Celestial News & Events

Possible Nova in Sagittarius

If you've got a clear, dark view toward the southern horizon, try your hand at spotting a flaring star that has brightened to near 9th magnitude in northwest Sagittarius.

Exoplanets

Seeing Exoplanets in a New Light

Researchers have devised a way to peek at the atmospheres of non-transiting exoplanets. The method may prove to be a valuable tool in astronomers' efforts to characterize planets outside our solar system.

Astronomy & Observing News

How to Grow a Supermassive Black Hole

A new study says most black holes may grow by snacking instead of collision-induced feeding frenzies.

Celestial News & Events

Let the Star Parties Begin!

Want to gaze at the Milky Way all night or peer into the eyepiece of a 12-inch telescope? Escape the city lights and head for the nearest big amateur nighttime gathering.

Doctor operating a jackhammer?

Astronomy and Society

Wanted: A Little Common (Sky) Sense

When it comes to things astronomical, why do so many people with no knowledge of the sky try to figure things out for themselves — and come to the wrong conclusions?

Evening sky in mid-August

Celestial News & Events

Tour August's Sky! | June 22nd, 2012

Mark your calendars for the night of Saturday, August 11th, when the Perseid meteor shower will peak. Stay up late to catch the risings of Jupiter and Venus, or just enjoy Mars and Saturn low in the evening twilight.

Astronomy & Observing News

A Great Transit Trip to Hawaii

Editor in Chief Robert Naeye looks back on S&T's tour to the friendly islands of Hawaii to see the transit of Venus.

Astronomy & Observing News

Sky & Telescope August 2012

Sky & Telescope's August 2012 issue is now available to digital subscribers. Some print subscribers may have already received it, and it's officially on-sale at newsstands starting July 3rd.

Reionization

Cosmology

A Windy Early Universe

Winds in the early universe could make radio observations of the first stars and galaxies a little easier, says a new study published in Nature.