Best-yet New Horizons Views of Pluto & Charon

NASA’s New Horizons spacecraft has returned high-resolution, richly detailed images of Pluto and its moon Charon, revealing surfaces that are confounding in their complexity.

New View of Ceres’ Amazing Spots

The bright spots in Ceres’ crater Occator are the gift that keeps on giving. Check out the latest composite image from NASA’s Dawn spacecraft.

Twin Stars Simplify Distance Measurements

A new technique that relies on identifying stellar twins yields a novel way to measure distances to the stars.

ISS Photos Yield “Cities at Night” World Map

Researchers on the ground have combed through a trove of images taken by orbiting astronauts to reveal unprecedented details about light pollution streaming from Earth’s major cities.


This Week’s Sky at a Glance, September 11 – 19


Try for a record-thin Moon under the dawn planets tomorrow morning (Sept. 12th). Then watch the waxing crescent in the evening march toward Saturn and Scorpius.

How to See the Farthest Thing You Can See

Step by step, we explore the farthest things visible with the naked eye, from the most distant star to the hinterlands of the Andromeda Galaxy.

September 13th’s Partial Solar Eclipse

Residents of southern Africa get to watch the Moon cover part of the Sun not long after (or during) sunrise on Sunday, September 13th.

Tour September’s Sky: A Lunar Eclipse!

This month’s stargazing features pretty planetary treats in the eastern sky before dawn – and the last total lunar eclipse visible until 2018.


Watch This Month’s Lunar Eclipse Live!

Visit our website on the night of September 27th to watch our exclusive webcast of the last total lunar eclipse anywhere until 2018.


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