Backyard stargazers get a monthly guide to the northern hemisphere’s skywatching events with “Tonight’s Sky.” In October, remnants of Halley’s Comet burn up in the Orionid meteor shower. ... Read More

This is my fourth episode of my new series in the iPhone 5’s durability test. In this episode I test the iPhone 5 and see whether it survives or not.... Read More

A new, improved portrait of Hubble’s deepest-ever view of the universe, called the eXtreme Deep Field, or XDF, looks far away and back in time to reveal faint galaxies at one ten-billionth the brightness of what the human eye can see. This is the culmination of 10 years of observing a patch of sky that contains thousands of far-flung galaxies. The full-color XDF image shows previously unseen galaxies as they looked in the early universe, billions of years ago.... Read More