2081–2100 of 6,715 results
Moment of impact

Celestial News & Events

Texas Amateur Detects Possible Impact on Jupiter

It looks like Jupiter got slammed again! A bright flash from a possible impact lit up the planet's South Equatorial Belt Tuesday night. 

Yutu 2 makes tracks

Solar System

New Images from China's Chang'e 4 as Eighth Lunar Day Ends

China’s Chang’e 4 mission is continuing its science and exploration work on the farside of the Moon, having completed its eighth lunar day of activities on Wednesday.

Pro-Am Collaboration

From Lunar Flashes to Variable Stars: Pro-Am Astronomy Projects

Track satellites, spot flashes on the Moon, monitor violent stars — learn how amateur astronomers can become involved in professional science.

Exoplanets

TESS's First Year of Science

NASA’s latest exoplanet hunter has found more than two dozen new worlds, at least one of which might be habitable.

warped galaxy disk

Milky Way

Warped Milky Way in 3D

Astronomers have used pulsating stars to trace the crooked shape of our galaxy’s disk.

Moon-Jupiter-Saturn on Aug 9

Celestial News & Events

August 2019: Stars of Summer

Download August's Sky Tour astronomy podcast for tips on observing the Perseid meteor shower and the key planets, stars, and constellations in the evening skies of summer.

Moon phases in perspective

Celestial News & Events

August Will Have Two New Moons! What’s the Big Deal?

First there were "blue Moons;" now there are "black Moons." What do these terms mean . . . and do they matter?

Fireball Over Ontario

Celestial News & Events

Fireball May Have Dropped Meteorites in Ontario

A lime-green meteor as bright as the full Moon streaked across Canadian skies on July 24th and may have delivered free samples from the asteroid belt.

star in gravitational well

Black Holes

Galactic Center Gravity Test Confirmed

A second team of astronomers has now confirmed the light from a star passing near our galaxy’s central black hole behaved as predicted by Einstein’s theory of gravity.

Red giant stars in galaxy halos

Cosmology

Tension Over Hubble Constant Continues

A new measurement fuels an ongoing debate about the rate at which today’s universe is expanding.

lander and rover

Solar System

India Heads to the Moon With Chandrayaan 2

India enters the 21st-century race to the Moon with its Chandrayaan 2 mission.

Space Missions

Apollo's 50th: A Look Back and a Look Forward

On the 50th anniversary of the Moon landing, we take a look back at the history of the first landing and forward, toward NASA's Gateway and beyond.

Infographic: (Back) to the Moon

Space Missions

Infographic: (Back) To the Moon

Takes a look at what we can expect to see in the next five years of Moon exploration with Sky & Telescope's infographic from the July 2019 issue.

Buzz Aldrin and the first ALSEP

Solar System

The Science of Apollo

Apollo 11 broke new ground for exploration, but along the way NASA squeezed as much science as it could out of this and subsequent missions landing on the Moon. From President John F. Kennedy’s 1961 mandate to the moment when Apollo 17 departed the Moon in 1972, Apollo was about…

Armstrong, Aldrin & Collins

Celestial News & Events

Celebrate Apollo 11 with a Visit to Armstrong, Aldrin and Collins Craters

Find the craters named for the three astronauts who flew the first manned mission to land on the Moon.

EROSITA's seven mirror modules

Professional Telescopes

German-Russian Astronomy Satellite Launches

Spektrum-Röntgen-Gamma, a long-delayed and much-modified X-ray astronomy package, launched successfully from the Kazakh Steppe on Saturday.

Ed Fendell

Astronomy and Society

Live from the Moon: How Earth Saw the First Steps of Apollo 11

Neil Armstrong's and Buzz Aldrin's first steps on the Moon changed the world. But that the world would see them wasn't a given.

Thirty Meter Telescope at night

People, Places, and Events

Thirty Meter Telescope Set to Begin Construction

Hawaiian Governor David Ige and the Thirty Meter Telescope International Observatory have announced that construction of the Thirty Meter Telescope will begin the week of July 15th.

Canopus

Night Sky Sights

Meet Canopus, the Second Brightest Star

The second-brightest star after Sirius, Canopus is visible in southern skies, shining out of the constellation Carina.

Orbit of asteroid 2019 LF6

Solar System

Sky-surveying Telescopes Sweep Up Near-Earth Asteroids

Discoveries include a near-Earth asteroid with the shortest “year” and another found hours before it burned up in Earth’s atmosphere.