Understanding the nature of our cosmos requires an accurate map of how galaxies are spread throughout it. For decades, astronomers suspected that something vast lurked behind the Milky Way’s dense, dusty disk in our sky. There were indirect, subtle distortions present in galaxy motions that we could see, showing unexplained gravitational pulls. But the structureContinue reading "Giant supercluster discovered hiding behind the Milky Way"

The post Giant supercluster discovered hiding behind the Milky Way appeared first on Astronomy Magazine.

Looking for a sky event this week? Check out our full Sky This Week column.  June 4: Jupiter passes south of Pollux Now that the Red Planet is rising roughly an hour before the Sun, let’s check in on Mars in the predawn sky. The nearby world now has time to climb well above the horizon, leadingContinue reading "The Sky Today on Friday, June 5: Check in on Mars"

The post The Sky Today on Friday, June 5: Check in on Mars appeared first on Astronomy Magazine.

Friday, June 5Standing some 50° high in the south by 10 P.M. local daylight time, M5 is a fabulous globular cluster well within the reach of any instrument, from binoculars to telescopes. It is even visible to some observers without optical aid at all on a clear, dark night, so if your southern horizon isContinue reading "The Sky This Week from June 5 to 12: Jupiter and Venus meet"

The post The Sky This Week from June 5 to 12: Jupiter and Venus meet appeared first on Astronomy Magazine.