The newly discovered planet, Kepler-186f, is the first Earth-sized exoplanet circling in its star’s habitable zone. While it brings astronomers significantly closer to the goal of finding an Earth twin, we’re not there quite yet.
Looking through a telescope introduces you to a whole new world of unexpected wonders. But telescopes come in a huge range of sizes and shapes. Here's a detailed, printable guide to the essential features that every good scope needs to have.
April 2014 will be the last month covered by Sky & Telescope's wildly popular SkyWeek TV show.
New images from NASA’s Cassini mission show bright spots along Saturn’s A ring, likely caused by a small moonlet in the process of forming or shattering.
Sky & Telescope editors and staff made our annual pilgrimage to the astronomy expo to meet with our readers and get the scoop on the bevy of new products unleashed this year.
Take a look at this supernova remnant from radio waves to x-rays to see multiple features of its bubble-like expanding shock wave. Supernovae — the dramatic explosions of massive stars ending their lives — can outshine their host galaxies for weeks, allowing them to be seen across millions of light-years of empty space. On...
North Americans haven't seen a total eclipse of the Moon since 2011. But this long dry spell breaks late on the night of April 14–15 as the Moon makes a leisurely pass through Earth's deepest shadow.
Sizzling gas giants circling close to their host stars — so-called hot Jupiters — keep their host stars young and active, a new study suggests.
The editors of Sky & Telescope are excited to announce that we are unveiling a new look for our website – check back on April 10th for the new design!
Scientists have new insight into the damage caused by a Rhode Island–size asteroid that hit Earth more than 3 billion years ago, making the rock that wiped out the dinosaurs look like a lightweight.
The Northeast Astronomy Forum in Suffern, NY, will welcome visitors from across the world on April 12–13, 2014. Sky & Telescope will be there. Will you?
The most precise measurement yet of the Hubble parameter illuminates dark energy — the elusive entity that’s accelerating the universe’s expansion.
NASA has a fully functioning spacecraft orbiting the Moon, all science goals completed, and a lunar eclipse coming up. It's a perfect opportunity to make some risky but potentially rewarding swoops within 2 miles of the lunar surface.
Mars is making its nearest and brightest appearance in the night sky since the end of 2007.
Data from NASA’s Cassini spacecraft have provided further evidence that Saturn’s tiny moon Enceladus harbors a liquid ocean under its surface.
Astronomers have developed a new method to measure distances to bright but faraway galaxies, a tool which will help better constrain the expansion rate of the universe.
This year’s April Fools' provides a wealth of alarming results. Catch up on all the scientific shenanigans here.
Join the world’s largest celebration of astronomy — Global Astronomy Month — throughout April.
It's a great month, celestially speaking: the brilliant stars of winter crowd in the southwest at nightfall, Jupiter is joined by Mars, and the first total lunar eclipse in 2½ years occurs at mid-month.
Infrared observations of the Circinus Galaxy may help reveal the shape of the dusty region fueling its active galactic nucleus and shed light on what governs dust structures in other galaxies.
The European Space Agency’s comet-chasing spacecraft has imaged its destination for the first time since waking up from 957 days of hibernation.
An international team of observers has made the surprising discovery that a distant asteroid has two distinct, dense rings.
There was widespread hope that thousands of skywatchers would see the bright star Regulus briefly occulted by an asteroid early on March 20th. In the end, likely <u>no one</u> saw it. Here's why.
Astronomers have kicked around the idea of a distant "Planet X" for decades. But the recent discovery of 2012 VP<sub>113</sub>, located in an orbital "no man's land" roughly twice as far away as Pluto, has stoked the possibility that it really exists.
A team of astronomers claim to have the most compelling case for annihilating dark matter yet.