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Sky Tour Astronomy Podcast

November Podcast: Horse, Dolphin, Arrow, and Fish

With Jupiter and Saturn leading the way each evening, you can use this month’s Sky Tour podcast to track down some lesser-known constellations — and the most distant celestial object that you can see with just your eyes!

A purple skeletal hand reaches for an oval of pumpkin-colored blobs

Stellar Science

Dead Stars Come to Life This Halloween

The ghostly lights from two dead stars have stories to tell.

An artist’s impression of the collision of two black holes

The Black Hole Files with Camille Carlisle

Black Hole Rain

The planned LISA gravitational-wave detector might discover a shower of hundreds of small black holes falling in galactic centers.

People, Places, and Events

AAS Quasquicentennial: Celebrating 125 Years in 2024

The American Astronomical Society is celebrating its 125th anniversary. Visit the AAS site to learn more about this exciting milestone.

composite showing an ultra-diffuse galaxy in color surrounded by background shown in black and white

Cosmology

Ghost-like Galaxy Defies Dark Matter Model

Astronomers have discovered a large but very dim ghost-like galaxy. Its existence challenges our notions of dark matter.

Full Moon and Jupiter rising in twilight, October 28 and 29, 2023

Celestial News & Events

This Week's Sky at a Glance, October 27 – November 5

The full Moon on October 28th shines near full Jupiter at opposition this week. Telescopically, Jupiter this week is as big as you'll ever see it,

Solar System

Marsquake Reveals Molten Layer Above Martian Core

An impact far from NASA's Insight lander on Mars set off seismic waves that revealed new details about the Martian interior.

a strip of bright green light becoming red as it approaches a dark treeline against a dark blue background

People, Places, and Events

A Windy and Wonderful Icelandic Aurora Adventure

Sky & Telescope’s recent tour to Iceland explored all the island’s sights — and kept S&T’s record at a solid nine for nine for seeing auroras!

The cosmic web of dark matter particles is sharp

Cosmology

Largest-ever Computer Simulation of the Universe

The Flamingo simulations are not only the largest but also the most all-encompassing simulations of the universe, from 13.75 billion years ago to today.

Io, as imaged by Juno

Solar System

Striking New Views of Jupiter and Its Moon Io

The James Webb Space Telescope and Juno mission turned their eyes to Jupiter and its volcanic moon Io, revealing fine details.

Moon and Saturn at dusk, Oct 23-24, 2023

Celestial News & Events

This Week's Sky at a Glance, October 20 – 29

The waxing Moon in the evening sky visits Saturn, then Jupiter. And as Halloween approaches, Arcturus becomes the Ghost of Summer Suns.

Fast radio burst illustration

Stellar Science

Radio Burst Breaks Distance Record, Challenges Theories

A highly energetic fast radio burst, which broke the distance record, provides a crucial test for theories of these events' origins.

Illustration of Starlink satellites in grid-like orbits over radio receiver array

Astronomy and Society

A New Hope? Taming the Satellite Swarm

Going by the paperwork, 1 million satellites are headed for the skies. The question is, how many of these are real? New policy may help stem the tide.

Orionid composite 2015-2022

Explore the Night with Bob King

Orionid Meteors Fly; Two Moons Shadow Jupiter

Bundle up and enjoy the Orionid meteor shower under moonless skies this week. Don't miss the warm-up act, either, when two of Jupiter's moons pair up in a captivating double-shadow transit.

solar flare

Solar System

Unearthing a Solar Storm in Ancient Alpine Trees

Ancient pine trees hold the record of an atmospheric event 14,373 years ago. The only known explanation is a massive solar storm.

Cloudy partial eclipse

Celestial News & Events

Annular Solar Eclipse Dazzles Watchers Across North America

The weekend's solar eclipse dazzled observers throughout the U.S. and Mexico. Sky & Telescope editors and contributing editors report.

Annular eclipse sequence

Eclipses

How to Observe the October 14th Annular Solar Eclipse

If you'll be in the path of the October 14, 2023, annular eclipse, here's what you can look for as the Moon covers the face of the Sun.

Annular eclipse

Eclipses

Where to Watch the October 14th Annular Solar Eclipse Online

If you can't see the annular solar eclipse in person, we've got some online viewing opportunities for you.

Psyche launch

Solar System

Psyche Mission Is on the Way to Psyche, the Asteroid

The Psyche mission launched today, on its way to rendezvous with the asteroid of the same name in 2029.

Jupiter and partially eclipsed Io, Oct. 5, 2023.. Sean Walker image.

This Week's Sky At a Glance

This Week's Sky at a Glance, October 13 – 22

The week's big event is the Moon stepping on the Sun on Saturday the 14th. But the Moon's not done. Several days later it steps squarely on the handle of the Sagittarius Teapot, then on Herman's Cross. Show-off. Image: S&T's Sean Walker resolves Io half lit as it slips into Jupiter's shadow.