Hari Prasad

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Green glow from ancient galaxies surprises scientists

GRAPEVINE, Texas — The galaxies are greener on the other side of the universe, it seems: A new analysis reveals that some of the most distant galaxies ever observed are radiating green light, a finding that could deeply affect developing models of those early galaxies.<p>"It’s a very distinctive, …

A star might explode soon enough for us to watch, and it sounds like it'll be out of this world

In the coming years, looking up at the stars might totally change. That’s because there’s an astronomical event coming, which will make a huge …

Our solar system might have a ninth planet, and researchers have an idea of where it came from

We all grew up learning that our sun has eight friends: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Now, researchers who …

19 U.S. museums with outstanding architecture

When design and art collide<p><i>Editor’s Note: This post was originally published in January 2017 and has been updated with the most recent information.</i><p>From New York to Los Angeles and everywhere in between, U.S. museums house some of the finest art in the world. While it’s easy to get caught up in the …

Museums

Space, time and the Elbphilharmonie

Music is the most ephemeral of the arts: hardly has a note sounded out, and it's gone. But sounds from the opening of the Elbphilharmonie are still …

Time I
Antarctica

The First Full Moon of 2017 Will Rise on Thursday Night—And It's Going to Be Spectacular

The Wolf Moon only happens once a year.<p>If you were excited about getting a glimpse of September's Harvest Moon eclipse, you're not going to miss 2017's first full moon on Thursday, Jan. 12. January's full moon — also known as the Wolf Moon — was named by Native American tribes, according to <i>The Old</i> …

We may finally know the ‘missing element’ hidden in the Earth’s fiery core

Scientists have discovered what phantom element might be in the Earth’s core.<p>The mystery material that makes up a significant proportion of our …

NIST Physicists ‘Squeeze’ Light to Cool Microscopic Drum Below Quantum Limit

Physicists at the National Institute of Standards and Technology (NIST) have cooled a mechanical object to a temperature lower than previously …

Hubble Space Telescope Spies A Distant Collision Between Two Gas-Rich Spiral Galaxies

Collision of two galaxies — each made up of billions of stars — is an event that is as cataclysmic as it is violent. Take IRAS 14348-1447 — a distant …

A simple explanation of mysterious space-stretching ‘dark energy?’

For nearly 2 decades, cosmologists have known that the expansion of the universe is accelerating, as if some mysterious "dark energy" is blowing it …

Milky Way’s black hole may hurl galactic spitballs our way

<b>GRAPEVINE, TEXAS</b> — The gargantuan black hole at the center of the Milky Way is a little like an unruly kid, hurling spitballs. But unlike a child’s …

Universe

We can't directly see black holes. But this time lapse shows the awesome power of their gravity.

Watch: stars orbit the supermassive black hole in the center of our galaxy.<p>No astronomer has even seen a black hole through a telescope. They’re dark, often occluded by matter, and actually very small compared with many of the stars in the sky. We’ve never directly seen the ring of material around …

Black Holes