January 2013: Top 10 space stories of 2012

This month’s issue of Astronomy magazine counts down the top space stories of the past year, describes the upcoming bright appearance of Comet ISON, explores the Voyager mission’s biggest discoveries, explains how gravity provides a lens to study distant objects, reveals a contemporary new design to celebrate the magazine’s 40th year, and more.
By Liz Kruesi Published: November 26, 2012
ASY-CV0113
Waukesha, Wis. — In 2012, scientists spied the base of a black hole’s jet and detected a particle they’ve been seeking for 40 years. Also in the past year, planetary scientists landed the most-complicated rover yet on the Red Planet, uncovered secrets of the asteroid Vesta, and discovered planets in unexpected extrasolar environments. Manned space flight even saw a historic mission occur. It was a great year for space science discoveries — but what was the biggest story of the year?

Astronomy’s editors ranked the most important stories of the past 12 months, and Associate Editor Liz Kruesi highlights those discoveries in “Top 10 space stories of 2012.”

Read the countdown in the January 2013 issue of Astronomy magazine, on newsstands December 4.

“Will Comet ISON be a superstar?”
Get ready for what might be the brightest comet anyone alive has ever seen. Astronomers discovered Comet C/2012 S1 (ISON) in September, and with additional observations they’ve since refined its orbit. Senior Editor Michael E. Bakich writes about the comet’s discovery and provides an overview of the object’s predicted appearance — including its nearest approach in late November 2013 — and a large finder chart showcasing the comet’s 2013 trajectory in “Will Comet ISON be a superstar?”

“Voyager’s ‘new’ solar system”
Relive the biggest discoveries from one of the greatest planetary-science missions in “Voyager’s ‘new’ solar system.” The twin Voyager spacecraft, which both launched in 1977, embarked on a grand tour of the solar system’s giant planets — and their journeys aren’t over yet. Senior Editor Michael E. Bakich explores 10 of the most important Voyager findings, and describes how both probes are still returning valuable information about the Sun’s influence and should continue to do so for another decade.

“How gravity’s grand illusion reveals the universe”
An object’s intense gravity can bend, magnify, and amplify the light from a background object. Astronomers put this effect, called gravitational lensing, to use searching for distant galaxies, exoplanets, and unseen matter. “Over the past century, gravitational lensing has gone from an obscure theory to an indispensable tool for unraveling some of the universe’s deepest secrets,” writes Ray Villard in “How gravity’s grand illusion reveals the universe.”

January night-sky events visible without optical aid
  • January 3 — The Quadrantid meteor shower peaks in the early morning hours.
  • January 10 — The Moon passes 3° north of Venus.
  • January 15 — Saturn stands more than 30° high in the southern sky roughly an hour before dawn.
  • January 21 — The Moon passes 0.5° south of Jupiter.

Also in the January 2012 Astronomy

This article originally appeared on Astronomy.com and is reprinted here with permission from Kalmbach Publishing.