21–40 of 148 results

Press Releases

How To Find Comet Lulin This Week

Comet Lulin is nearest and brightest this week, and it's in a dark, moonless sky. Use our exclusive sky chart to find it with binoculars or a telescope!

Pro-Am Collaboration

Rare Eclipse of EE Cephei Is Set to Begin

During January 2009 a faint star in Cepheus will fade, as it does every five or six years, when "something" goes in front of it.

Venus, Jupiter, and a crescent Moon

Press Releases

Dazzling Planet Duo Beckons in Evening Twilight

As November ends, Jupiter and Venus perform a dazzling dance in the evening twilight — and they're joined by a slender crescent Moon on December 1st.

Pro-Am Collaboration

Rock from Space to Burn Up over Africa

Late Monday night, October 6-7, 2008, a tiny asteroid will enter Earth's atmosphere over Sudan, creating a spectacular explosion in the night sky.

Press Releases

Astronomers Re-Date Caesar's Invasion of Britain

FOR IMMEDIATE RELEASE Contacts: Donald W. Olson, Department of Physics, Texas State University 512-245-2131, [email protected] Roger W. Sinnott, Senior Editor, Sky & Telescope 855-638-5388 x2146, [email protected] Cambridge, MA, June 30, 2008 — Researchers from Texas State University have revised the date when Julius Caesar invaded Britain in 55 BC, a…

History and Sky Lore

New Date for Caesar's British Invasion

In 55 BC, when Julius Caesar and his fleet approached the white cliffs of Dover on the British coast, he faced unexpectedly strong tides. Researchers from Texas State University have used tidal measurements and other astronomical clues to revise the exact date of the historic landing.

Solar System

Amateur Finds Fastest-Spinning Asteroid

While chasing near-Earth asteroid 2008 HJ with a remotely controlled telescope in Australia, Richard Miles made a record-setting discovery.

Pro-Am Collaboration

Comet Boattini Brightens

During May and June 2008, this visitor may be dimly visible without a telescope — but only if you live in the Southern Hemisphere.

Celestial News & Events

A Rare Chance To See "Opposing Crescent" Moons

Here's a special challenge for North American skywatchers on Sunday morning and Monday evening. But this one is tough. To prepare for glimpsing Sunday morning's crescent Moon, watch the sunrise on Saturday morning.

Pro-Am Collaboration

Another Bright Nova, This Time in Sagittarius

Just magnitude 9 when discovered on April 18, 2008, this nova in Sagittarius has brightened tenfold.

Pro-Am Collaboration

Found in Cygnus: A 7th-Magnitude Nova

Two Japanese amateurs captured the new star on April 10, 2008, at a spot where their camera had recorded nothing just three days earlier.

Pro-Am Collaboration

A Triple Occultation by Eugenia and Its Moons

On March 8, 2008, this asteroid or one of its two moons could make a faint naked-eye star vanish briefly from the sky.

Pro-Am Collaboration

Possible Occultation by Varuna Sunday Night

A huge, remote asteroid could briefly blot out a faint star in Gemini on February 10-11, 2008.

People, Places, and Events

David Levy's Binary Asteroid

An otherwise run-of-the-mill, main-belt asteroid named 3673 Levy just got a lot more interesting: It has a tiny moon!

Stellar Science

The Orion Nebula, Exactly?

Radio astronomers succeed where others have failed to pin down the distance to a great showpiece of the night sky.

Pro-Am Collaboration

Nova in Puppis

On Nov. 14, 2007, a star in the constellation Puppis suddenly became visible in binoculars.

Nova Puppis 2007

Celestial News & Events

Nova in Puppis

On Nov. 14, 2007, a star in the constellation Puppis suddenly became visible in binoculars.

Pro-Am Collaboration

Comet Holmes Undergoes Huge Outburst

On Wednesday, October 24, 2007, this faint comet between the orbits of Mars and Jupiter suddenly became a naked-eye "star."

Space Missions

Refining Hipparcos's Star Distances

To extract even better star distances, a Cambridge astronomer who took part in the Hipparcos mission has just completed a whole new analysis of the raw data.

Pro-Am Collaboration

An Occultation by Pluto's Moon Charon?

New calculations indicate that Charon may actually occult an 8.7-magnitude star on Sept. 27, 2007.