4121–4140 of 6,712 results

Galaxies

Galaxy Zoo's Odd Black Holes

Citizen scientists are helping astronomers understand how galaxies and their resident supermassive black holes grow.

Galaxies

Black Holes Might Form Like Planets

Astronomers have plenty of evidence for small and large black holes, but have had little luck tracking down the mid-sized variety. One team of researchers suggests the search has been focused on the wrong places all along.

Astronomy & Observing News

A Peek Inside Sky & Telescope September 2012

Sky & Telescope's September 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 September 1st.

Astronomy & Observing News

Sky & Telescope October 2012

Sky & Telescope's October 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 September 4th.

Galaxies

Andromeda Galaxy’s Odd Double Core

A new study simulating stars as they orbit a black hole might provide the best explanation for how our nearest spiral galaxy neighbor grew its lopsided nucleus.

Professional Telescopes

Discovery Channel Telescope's Debut

After seven years of construction, Lowell Observatory's Discovery Channel Telescope is about to come online. The DCT team expects the state-of-the-art 4.3-meter scope to breathe new life into the storied observatory and allow astronomers new views of comets, stars, and deep-space objects.

Astronomy & Observing News

Ancient Spiral Galaxy Discovered

An ancient spiral galaxy offers another tantalizing clue to how nature might create these grand designs.

Celestial News & Events

Jupiter's Disappearing Act

Skywatchers across the Eastern Hemisphere looked on as the King of Planets briefly ducked behind the Moon on July 15th.

Astronomy and Society

Do-It-Yourself Space Science

A California startup seeks to democratize space research by putting a tiny, custom-built satellite into orbit — and letting the public decide how to use it.

Astronomy & Observing News

Seeing "Dark" Galaxies

After years of failure, astronomers have finally succeeded in imaging primeval clouds of gas like those that existed before there were stars.

Cheney in Times Square

Astronomy and Society

AMA Addresses Light Pollution

The American Medical Association has released a report detailing several possible health concerns related to nighttime light exposure. But some lighting researchers worry the conclusions are more alarmist than is warranted.

Celestial News & Events

July 15th's Occultation of Jupiter

Lucky skywatchers in Europe and northern Asia can watch a waning crescent Moon slide over Jupiter and its Galilean satellites in the hours before and after Sunday morning's dawn.

Celestial News & Events

Auroras Likely July 14-15

Strong auroras are likely this weekend at high latitudes and possible at middle latitudes.

Solar System

Pluto's Moons: Five and Counting

When NASA's New Horizons spacecraft reaches Pluto in three years, it'll have one more object to check out: a tiny fifth moon discovered by the Hubble Space Telescope.

Astronomy & Observing News

Exoplanet Hunters Dim the Lights

Scientists have devised a new way to dim starlight's blinding glare, a technique that improves on existing technologies to allow astronomers a clearer view of exoplanets orbiting nearby stars.

Celestial News & Events

Sunspot 1520 Rolls Into View

The Sun's spottiness continues with a giant magnetic blotch stretched just below its equator.

Dome at Lowell Observatory

People, Places, and Events

Lowell Observatory's Pro-Am Initiative

If you're a serious stargazer with good gear, a passion for observing, and some free time, a team of astronomers at Lowell Observatory hope to hear from you.

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?