While Americans would be able to see the galaxy sometime from early February to late October, pinpointing the best month for viewing depends on how far north or south a person lives, according to Capture the Atlas: For people inAlaska, the best time to see the Milky Way is from...
—How far apart are stars? —What's the oldest star in the universe? What about the youngest? So why has it been more than 400 years since one has been detected in our galaxy? Astronomers' best estimates are complicated by the Milky Way's shape and the dense clouds of gas and dust....
The Milky Way is estimated to be 13.2 billion years old, and is one of many billions ofgalaxies in the known universe. Other galaxies may be older and bigger, but as Earth’s cosmic address, the Milky Way has long fascinated humans. It was recognized by astronomers thousands of years ago...
menu science how big is the milky way, anyway? when you try to account for dark matter, that number gets a little tricky to figure out. may 31, 2016 nasa/jpl-caltech/univ. of wisconsin there’s a race among the astrophysics community to determine the mass of the entire milky way ...
Part of the problem is that most of a galaxy's mass is invisible. Dark matter, an enigmatic substance that gives off no light of any kind, makes up around 85 percent of our Milky Way, Patel said. So simply counting the stars in our galaxy won't get you very far. You may like ...
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The realization that other ETIs are probably sending out radio noise leads to the obvious question: How easily can hypothetical ETIs detect our radio signals and other technosignatures? A fledgling space-travelling civilization similar to ours may be out there somewhere in the Milky Way. Maybe th...
To see the Milky Way, you'll need to travel far from any city, to a wilderness area. Even in rural farming country, there are still a lot of bright lighting fixtures that wipe out the night sky. (I'm lucky; I live on a farm where my nearest neighbors are about half a mile away...
It's easy to think of maps as sets of visual directions. Whether you're trying to get to the top of Mount Everest or to a friend's new home, a map can help you find your way. But maps can do more than help you figure out where you are and where you're going. They are repre...
Astronomers as far back as the mid-18th century had speculated that some nebulae might be remote systems of stars or “island universes,” but there wasno data to support this hypothesis. Island universes referred to the idea that there could be enormous stellar systems outside the Milky Way ...