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Artist's impression of galactic encounter's aftereffects
Pattern in Milky Way’s Stars Suggests Recent Galactic Whack
An unexpected pattern in the motions of the stars in the Milky Way's disk points to a recent whack from another galaxy.
Harvest Moon
Here Comes the Harvest Moon!
This month's Harvest Moon will be up early to light the night and act as a beacon for watching the annual fall bird migration through a small telescope.
Ahuna Mons
NASA's Dawn Orbiter Probes
the History of Cryovolcanism
on Ceres
Does this "mountain" on Ceres reveal the course of briny, super-cold eruptions in the past — and likely the present — on the giant asteroid?
ISO
Choosing the Best (Good Enough) ISO for Astrophotography
There's an easy way to test your DSLR camera to find its best low-light ISO performance.
Art: a super-Earth we could call Vulcan
Super-Earth Discovered in (Fictional) Vulcan System
Gene Roddenberry and three astronomers made the case 30 years ago that the star 40 Eridani ought to host Vulcan, Spock's home. Now, a robotic survey has discovered a planet around that very star.
Finland aurora
Join Sky & Telescope on the 2019 Finland Northern Lights Tour!
Three spots have opened up on this amazing tour — book now!
PixInsight Bootcamp
Live Webinar: PixInsight Boot Camp
Join astrophotographer Richard S. Wright Jr. along with Sky & Telescope Associate Editor Sean Walker as they help you navigate the powerful image-processing program PixInsight.

This Week’s Sky at a Glance

  • This Week's Sky at a Glance logo

    This Week’s Sky at a Glance, September 14 – 22
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Astronomy News

  • Pattern in Milky Way’s Stars Suggests Recent Galactic Whack
  • Sunspot Solar Observatory Reopens After Mysterious Shutdown
  • Dawn Probes Role of Cryovolcanism on Ceres
  • Super-Earth Discovered in (Fictional) Vulcan System
  • 60-Second Astro News: Starbirth, Stardeath, and the Evolution of Galaxies
  • Stars Shine Brightly for Acadia Night Sky Festival
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Explore the Night with Bob King

  • Here Comes the Harvest Moon!
  • Equuleus, the Constellation Nobody Knows
  • Explore the Veil Nebula
  • Comet 21P/Giacobini-Zinner Shines in September
  • See All Eight Planets in One Night
  • Shadow Play — Summertime Dark Nebulae for Binoculars
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Let’s Go Stargazing!

Getting Started in Astronomy
Begin Your Journey Here

Editor’s Pick

  • The Cygnus Wall in North America Nebula
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Current Issue Highlights

Sky & Telescope Magazine - October 2018
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Table of Contents

  • 10 New Moons for Jupiter
  • Organics Inside Enceladus
  • NASA’s Dawn Probe Reaches Its Low, Final Orbit
  • Download a copy of this issue!
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  • Moon-Venus-Jupiter in Sept 2018

    Tour September’s Sky: Goodbye, Venus!
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