Peering inside a monster galaxy
X-rays tell an explosive tale about the inner workings of M87 — a giant elliptical galaxy in the Virgo cluster that ranks among the most massive in the local universe.
Hubble Space Telescope observations reveal how the central jet in active galaxy M87 changes with time.
Secret lives of supermassive stars
The most massive stars burn through their material incredibly fast, die in fantastic explosions, and have long-lasting effects on their neighborhoods.
Astronomers model the lives and deaths of the first generation of stars on computers to learn how these behemoths affected their surroundings.
A dream night with the Discovery Channel Telescope
Few observers are able to use an instrument with a 14-foot mirror. For one night, Tom Polakis saw how the universe looks through such a behemoth.
Tom Polakis, who spent a night under the stars with this piece of big glass, shares more photos of his experience.
View Ceres and Vesta at their best
Take time this spring to track down the two brightest asteroids.
24 gems near the North Celestial Pole
Point your telescope northward any clear night, and you’ll see some of the best star clusters, nebulae, and galaxies in the sky.
Combine these nine far-northern objects with the 24 already described in the magazine, and you’ll have all you need for a great time at the eyepiece any night of the year.
Align your SCT quickly, easily, and in broad daylight with HOTECH’s Advanced CT Laser Collimator.
See Saturn in prime time
Don’t wait any longer. The time to observe Saturn is now!