Sky & Telescope Magazine

The almost-full Moon steps past orange Antares between Friday and Saturday evenings, June 26th and 27th.

The post This Week's Sky at a Glance, June 26 – July 5 appeared first on Sky & Telescope.

The core of the brightest galaxy in the cluster Abell 402 contains a curious void. New observations suggest that an ultra-massive black hole could have excavated this feature.

The post Into the Void: Investigating the Heart of a Giant Elliptical Galaxy appeared first on Sky & Telescope.

Exploding stars have left their radioactive mark on our planet. Now scientists have found more evidence of a particularly violent event in Earth’s more ancient past.

The post Exploding Stars Sprinkled Ancient Earth With Radioactive Iron and Plutonium appeared first on Sky & Telescope.

New analysis reveals a tight relationship between two supernova remnants in the outer Milky Way.

The post Double Whammy: Binary Supernova in Gemini appeared first on Sky & Telescope.

The most recent interstellar visitor was crisscrossing our galaxy for some 10 to 12 billion years before it came near the Sun.

The post Interstellar Comet 3I/ATLAS Has Cold, Ancient Origins appeared first on Sky & Telescope.

On its way to future encounters with Trojan asteroids, the Lucy spacecraft made a practice run past tiny asteroid 52246 Donaldjohanson on April 20, 2025. Now, the Lucy team, led […]

The post Lucy's First Asteroid Flyby Sheds Light on a Double-lobed Asteroid appeared first on Sky & Telescope.

The Moon as it will appear in an amateur telescope at 10 p.m. EDT Friday the 19th. This week Venus and Jupiter continue moving apart low in the western twilight. Vega and Arcturus shine equally high after dark. And watch Beta Lyrae self-eclipse.

The post This Week's Sky at a Glance, June 19 – 28 appeared first on Sky & Telescope.

A star-forming galaxy in the early universe might have sent a ghostly particle known as a neutrino crashing into the ice at Earth’s South Pole, after an 11 billion-year journey through space.

The post “Shadow Blaster” Galaxy Might Have Sent High-Energy Neutrino to Earth appeared first on Sky & Telescope.

On June 17th, much of North America can watch the Moon occult Venus in the daytime sky. All you need are binoculars.

The post See Venus Disappear in Broad Daylight on June 17th appeared first on Sky & Telescope.

The 18.6-year cycle of the lunar standstill belongs to the Moon. But recognizing it belongs to us. For centuries, people have watched carefully enough, remembered long enough, and taught faithfully enough to discover patterns that unfolded across generations.

The post Ancient Skies: The Moon That Returns Once in a Generation appeared first on Sky & Telescope.

A deep spectrum of a mysterious "little red dot" reveals a supermassive black hole cocooned in gas so dense it's opaque — but glowing in the infrared.

The post "Little Red Dot" Is a Cocooned Black Hole appeared first on Sky & Telescope.

A rare meteorite recovered from the Sahara Desert could be a fragment of a Moon-size body that met a violent end in the earliest days of the solar system.

The post Did A Moon-Size Planet Grow Fast and Die Young in the Early Solar System? appeared first on Sky & Telescope.

The three planets in the western twilight are pulling away from each other now. On Wednesday, the Moon will occult Venus in daylight.

The post This Week's Sky at a Glance, June 12 – 21 appeared first on Sky & Telescope.

Australia's Molonglo Observatory was saved from retirement; now, it holds the promise of future radio observations.

The post Revival of Australia’s Molonglo Radio Telescope appeared first on Sky & Telescope.

Meet Callisto, the heavily cratered moon that's the most distant of the Galilean satellites from Jupiter.

The post Meet Callisto, Jupiter's Ancient Moon appeared first on Sky & Telescope.

Astronomer and comet-hunter Alan Hale passed away on Saturday, June 6th, at 68 years old in his home in Cloudcroft, New Mexico.

The post Alan Hale (1958-2026) appeared first on Sky & Telescope.

The satellites being launched by Amazon are brighter than IAU-recommended limits — which means they'll interfere with astronomy.

The post Amazon's Satellites Are Impacting Astronomy appeared first on Sky & Telescope.

Astronomers have released the newest list of gravitational-wave detections, almost doubling the number of known signals from colliding black holes.

The post Gravitational-Wave Detections Surge with Latest Release appeared first on Sky & Telescope.

Bright Venus and Jupiter pass through conjunction in twilight this week, while Mercury, Pollux, and Castor watch them from nearby.

The post This Week's Sky at a Glance, June 5 – 14 appeared first on Sky & Telescope.

The Office of Management and Budget envisions diminishing peer review and international collaborations.

The post Proposed U.S. Grant Funding Rules Spark Worry, Backlash in Astronomy appeared first on Sky & Telescope.