Ruben D Segovia

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Jupiter's Ganymede has underground ocean: One more 'soggy' moon

Astronomers have found the most conclusive evidence yet that a large watery ocean lies beneath the surface of Jupiter's moon Ganymede.<p>With the discovery, Ganymede joins Enceladus and Europa as another moon in the solar system with a confirmed subterranean ocean.<p>"The solar system is now looking like …

Astronomy

Distant planet has four suns

Were it possible to see the skies from this world, the four parent stars would look like one small sun and two very bright stars visible in the …

Universe

Hubble at 25: the wonder of the universe laid bare

It has captured images of stars coalescing out of glowing clouds of dust, peered back more than 10bn years to study the early universe, pinpointed the remnants of supernovae explosions and helped physicists uncover some of the cosmos’s deepest secrets. The Hubble space telescope, which celebrates …

Strange lights on dwarf planet Ceres have scientists perplexed

A dwarf planet is shining two bright lights at a NASA spacecraft right now, and our smartest scientists are unsure what they are.<p>As bizarre as that …

Astronomy

APOD: The Rosette Nebula in Hydrogen and Oxygen (2015 Feb 25) Image Credit & Copyright: Arno Rottal (Far-Light-Photography) http://apod.nasa.gov/apod/ap150225.html Explanation: The Rosette Nebula is not the only cosmic cloud of gas and dust to evoke the imagery of flowers -- but it is the most famous. At the edge of a large molecular cloud in Monoceros, some 5,000 light years away, the petals of this rose are actually a stellar nursery whose lovely, symmetric shape is sculpted by the winds and radiation from its central cluster of hot young stars. The stars in the energetic cluster, cataloged as NGC 2244, are only a few million years old, while the central cavity in the Rosette Nebula, cataloged as NGC 2237, is about 50 light-years in diameter. The nebula can be seen firsthand with a small telescope toward the constellation of the Unicorn (Monoceros). http://www.far-light-photography.at/ Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=150225 #APOD

The Beehive: 1,000 stars in Cancer

On a dark night, look for it as a smudge of light, with 3 times the moon’s diameter. It’s really a wondrous cluster of stars called the Beehive, or …

Supermassive Black Hole Found Farting A Trillion Suns' Worth Of Energy

Scientists zero in on the size, shape, and speed of the gas that reconfigures galaxies<p>At the center of any massive galaxy, you’ll most likely find one daunting portion of space-time: a supermassive black hole. These gigantic gravity wells are so enormous, they have a mass that’s equal to millions …

Black Holes

In a Curious Case for Astronomers, a Brown Dwarf Goes Missing

Starstruck<p>Scientists trained one of the world's largest telescopes on the star and found nothing.<p>Astronomers are trying to crack a strange new case: the mystery of the missing dwarf star.<p>Using one of the biggest telescopes in the world, the ESO's Very Large Telescope in Chile, researchers were on …

4 Sky Events This Week: Mars Snuggles With Venus, Green Comet Rings a Bell

Starstruck<p>Sky-watchers get a last good look at comet Lovejoy while nearby planets jostle for attention.<p>As Earth's moon begins its climb in our night skies this week, the moons of Jupiter chase their shadows. Elsewhere in the solar system, the goddess of love makes her move on the god of war.<p><b>Jovian</b> …

Unexpected storm at a galaxy’s core

At the core of a galaxy called the Teacup, jets from a central supermassive black hole may be gradually destroying the galaxy’s ability to form new …

Week's Best Space Pictures: Space Smiley Face, Mercury Megacrater

A star smiley face seems to form a cosmic grin, a Space X rocket launches, and a giant iceberg breaks free in Antarctica in this week's roundup of space photos.

Watch: Stunning Nasa time-lapse captures Sun's activity over five years

A captivating video has been released by Nasa showing some of the most memorable moments of the Sun's activity in the last five years<p><b>The Sun</b>'s most impressive activity over the last five years has been released in a time-lapse <b>video</b> by Nasa.<p>The three minute video shows the changing surface of the …

This rare 4-star system will likely disintegrate

Astrophysicists have witnessed a rare event: the birth of a quadruple star system.<p>The system consists of a young star still in an early development …

Multiple-Star Birth Revealed in Stellar Nursery

Quadruple-star system will emerge in 40,000 years.<p>Astronomers have have gotten their first good look at the beginnings of a quadruple-star system.<p>The discovery could lead to a better understanding of why some stars, such as our sun, are loners, while many others are born into systems with two, …

5 Sky Events This Week: Moon Dances With Snow Globe, Lordly Rings, and a Jewel Box

Starstruck<p>Our romantic moon roams amid the sky's gems, just ahead of Valentine's Day.<p>Looking for the perfect Valentine's Day gift? Some deep-sky gems come stargazers' way this week, just ahead of the romantic holiday, thanks to Earth's moon pointing the way.<p><b>Zodiacal light.</b> At about an hour after …

New interactive map of Milky Way lets you see the light (and dust)

From 2009 to late 2013, the European Space Agency's Planck spacecraft revolved around our planet while using its telescope to soak up relic radiation from the Big Bang known as the Cosmic Microwave Background, or CMB. Its goal, in effect, was to look back in time to just about 370,000 years after …

Hubble snaps rare images of three moons crossing Jupiter

Here's a photo-op pretty enough to tempt any astronomer. With a series of well-timed shots, NASA's Hubble Space Telescope has managed to catch three of Jupiter's biggest moons whizzing across its surface in the same frame.<p>This Jovian lunar gathering, which took place Jan. 24, is a relatively rare …

6 Sky Events This Week: Primetime Jupiter, Asteroid Juno, and Zodiacal Light

Jupiter gives its best show of the year, and the elusive pyramids of light put in a rare appearance.<p>Watch the sky this week to soak in Jupiter's best appearance of 2015. You might also catch sight of a large asteroid and a ghostly light making tracks across the night sky.<p><b>Moon and Jupiter.</b> Look for …

How 40,000 Tons of Cosmic Dust Falling to Earth Affects You and Me

Our bodies are made of remnants of stars and massive explosions in the galaxies, authors say.<p>Astrophysics and medical pathology don't, at first sight, appear to have much in common. What do sunspots have to do with liver spots? How does the big bang connect with cystic fibrosis?<p>Astrophysicist Karel …

Naked Titan Viewed For First Time

As Saturn swans into sight for stargazers, the sun blasts its largest moon.<p>Saturn’s largest moon, Titan, looks more like Venus and Mars than astronomers ever suspected—at least when it comes to suffering a severe strike from the solar wind.<p>NASA’s Cassini spacecraft made a flyby of Titan in December …

Fiery star deaths may look different than we thought

These explosions are the most catastrophic events that occur in nature, and they happen all the time. We detect one every second in our sky; some are so large they can be seen with the naked eye, like the one Johannes Kepler observed in 1604. They’ve also been extensively researched. But a lot of …

Planetary system older than once thought possible -- 11.2 billion years old

The oldest planetary system ever found has been spotted by astronomers. The ancient star and five small, Earth-like planets are about 11.2 billion years old.<p>Until now, scientists questioned whether rocky planets could have formed so long ago, just 2.6 billion years after the big bang. Now they have …

Our Expanding Universe: Age, History & Other Facts

The universe was born with the Big Bang as an unimaginably hot, dense point. When the universe was just 10-34 of a second or so old — that is, a …

5 Sky Events This Week: Blue Giant, Crab Nebula, and Jovian Shadows

Seven Sisters stand revealed, while Io, one of Jupiter's moons, plays hide and seek.<p>Venus snuggles up with Neptune for stargazers this week, while the moon points to the remnants of an ancient stellar blast. Backyard astronomers, meanwhile, confront the challenge that comes from a Jovian moon's …

This Week's Sky at a Glance, January 16 – 24 - Sky & Telescope

Some daily sky sights among the ever-changing Moon, planets, and stars.<p>Comet Lovejoy as imaged on December 30th by Alan Tough using a 4-inch f/5 …

Manifesting Infinity - Photographs and text by Michael Donnor | LensCulture

There is a certain fascination we have always had when questioning our existence and relation within the universe. It is the pursuit of those ultimate answers, such as, time, space, and impermanence that both science and art are in constant search of.<p>The mind is whatever we want it to be; we can …

Watch Jumbo Asteroid Zip Past Earth

A passing space rock should offer a rare, bright viewing treat for sky-watchers.<p>A mountain-size space rock will sail past Earth on Monday, offering stargazers a close look at an interplanetary pinball. Luckily, NASA says there is no risk of collision, but it will be a rare astronomically close …

5 Cool Things We Just Learned About Rosetta’s Rubber Ducky Comet

Even with a missing lander, the mission is sending back primo info<p>The Rosetta mission made history last year, by being the first manmade spacecraft to ever orbit or land on a comet. Things didn't go exactly as planned, though. The lander Philae bounced around and got lost somewhere on the comet's …

Space

Rosetta Spacecraft, First to Orbit Comet, Finds Surprises Aplenty

Europe's Rosetta spacecraft reports unexpectedly bumpy, dusty, and dry discoveries on its new home.<p>Drama abounded when Europe's Philae probe landed on a comet last November—especially when the lander bounced a half mile into the air before its final touchdown, then quickly lost power. (See "Comet …