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Galaxies's posts - English uPOST

Charlie Jane Anders Charlie Jane Anders Jul 07, 2019.

A Near-Collision Stretched This Galaxy Like A "Taffy Pull"

A Near-Collision Stretched This Galaxy Like A "Taffy Pull"

Why does this galaxy have such a long curvy tail coming off it? That river of sunlike stars, going into deep space, was pulled away from NGC 7714 due to the gravitational pull of a galaxy passing by.

This galaxy was spotted by the Hubble Space Telescope in four separate exposures. NASA writes:

Though the universe is full of such colliding galaxies that are distorted in a gravitational...

Ryan F. Mandelbaum Ryan F. Mandelbaum Jun 19, 2019. 12 comments

Astronomers Peer Back 13 Billion Years and See Two Galaxies Colliding

Astronomers Peer Back 13 Billion Years and See Two Galaxies Colliding

Scientists have spotted one of the most distant (and therefore the youngest) example of merging galaxies yet observed, according to new results.

The team of researchers in Japan observed a distant source of light called B14-65666 using the Atacama Large Millimeter/submillimeter Array of telescopes in Chile. Higher-resolution data from light emitted by oxygen and carbon ions suggested to the...

12 Comments

George Dvorsky George Dvorsky Mar 08, 2019. 12 comments

How Heavy Is the Milky Way?

How Heavy Is the Milky Way?

By combining data from the Hubble and Gaia space telescopes, an international team of astronomers has come up with the most accurate estimate yet of our galaxy’s mass.

From stars, planets, and asteroids through to black holes and invisible dark matter, our galaxy is packed with a lot of stuff. The total mass of all this celestial stuff, however, is not something astronomers have been able to...

12 Comments

Jamie Condliffe Jamie Condliffe Feb 28, 2019.

Sharp New Image of Galaxy M 82 Reveals Its Dead Supernovae

Sharp New Image of Galaxy M 82 Reveals Its Dead Supernovae

This new image of galaxy Messier 82, acquired by astronomers from Chalmers University of Technology, is said to be "the sharpest astronomical image ever taken at very long radio wavelengths." In fact it's clear enough to show tiny, bright dots that are thought to be supernova remnants.

While previous images have shown M 82 to be is a swirling mass of stars, gas and dust, this...

George Dvorsky George Dvorsky Feb 16, 2019.

A "Bullet" Galaxy Is Piercing Through Other Galaxies At Ludicrous Speed

A "Bullet" Galaxy Is Piercing Through Other Galaxies At Ludicrous Speed

European astronomers using using the XMM-Newton X-ray space telescope have captured a glimpse of an unprecedented rogue galaxy that's smashing through other galaxies at a rate of 814 miles (1,310 km) per second.

Top image: A cool and compact galaxy can be seen piercing through a cluster of galaxies known as Abell 4067. (ESA/XMM-Newton/G. Chon)

The cool and compact system is located 1.4 billion...

George Dvorsky George Dvorsky Feb 15, 2019. 3 comments

New NASA Mission Will Look Back at Billions of Years of Cosmic History

New NASA Mission Will Look Back at Billions of Years of Cosmic History

A newly approved NASA mission, called SPHEREx, will use a space-based observatory to study the early conditions of the Universe and hunt for the celestial ingredients required for life.

Proposed in 2016, the Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer mission, or SPHEREx for short, was chosen by NASA from eight other proposed missions because it...

3 Comments

George Dvorsky George Dvorsky Feb 02, 2019. 10 comments

Astronomers Accidentally Discover a Hidden Galaxy Right Next Door

Astronomers Accidentally Discover a Hidden Galaxy Right Next Door
Your browser does not support HTML5 video tag.Click here to view original GIFThis computer animation uses real astronomical data to envision a trip through globular cluster NGC 6752, revealing the partially obscured dwarf galaxy Bedin 1 behind it.GIF: ESA/Hubble, M. Kornmesser/Gizmodo

While inspecting a known globular cluster, a team of astronomers began to notice that some of its stars didn’t...

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Tom McKay Tom McKay Nov 18, 2018. 15 comments

NASA Image of Merging Galaxy Clusters Looks Suspiciously Like the USS Enterprise

NASA Image of Merging Galaxy Clusters Looks Suspiciously Like the USS Enterprise

Humanity’s current understanding of physics may suggest faster-than-light travel is impossible, but researchers here on Earth can still observe happening in places much too far away to ever actually visit (and generally only what they looked like in the distant past). One of them is a galactic collision that, at least from our planetary vantage point, looks an awful lot like a craft going...

15 Comments

Ryan F. Mandelbaum Ryan F. Mandelbaum Oct 31, 2018. 2 comments

Our Galactic Neighbors Once Collided, New Observation Suggests

Our Galactic Neighbors Once Collided, New Observation Suggests

Should you find yourself in the southern hemisphere beneath dark skies, look up: You’ll see two faint, glowing smudges beside the vast, glowing trail of our Milky Way galaxy. These two Magellanic Clouds are galaxies, too, though smaller ones orbiting our own. And some time in the past, perhaps back in the dinosaur days, those two clouds may have collided.

A new study based on observations from...

2 Comments

Ryan F. Mandelbaum Ryan F. Mandelbaum Aug 30, 2018. 12 comments

Ancient ‘Monster Galaxy’ Is Forming Stars a Thousand Times Faster Than the Milky Way

Ancient ‘Monster Galaxy’ Is Forming Stars a Thousand Times Faster Than the Milky Way

Chile’s Atacama Large Millimeter/submillimeter Array (ALMA) has observed a galaxy that looks nothing like what researchers expected. It’s forming stars at an absolutely incredible rate.

The “Monster Galaxy”, also known as COSMOS-AzTEC-1, formed just 2 billion years after the Big Bang, and it turns more than a thousand Suns worth of gas into stars each year. Scientists still don’t understand...

12 Comments

Ryan F. Mandelbaum Ryan F. Mandelbaum Aug 18, 2018. 16 comments

Huge Patch of Universe Is Strangely Opaque Despite Its Lack of Galaxies

Huge Patch of Universe Is Strangely Opaque Despite Its Lack of Galaxies

The mere fact that we live in a universe boggles my mind every once in a while. But thankfully, our cosmic home is a place that follows rules; the laws of physics seem to agree everywhere, and galaxies are uniformly distributed throughout. Except for in this 300-million-light-year-long region, which seems to be missing something.

Scientists observed an opaque region of space in front of a...

16 Comments

Ryan F. Mandelbaum Ryan F. Mandelbaum Aug 17, 2018. 3 comments

The Universe's Oldest Galaxies Could Be Right in the Milky Way's Backyard

The Universe's Oldest Galaxies Could Be Right in the Milky Way's Backyard

The Universe’s earliest epochs appear to be written into the small dwarf galaxies orbiting our own galactic home, the Milky Way.

A team of researchers studying dark matter noticed a strange trend in the brightness of the satellite galaxies around the Milky Way. There seem to be two classes of these orbiting dwarf galaxies—dim ones and bright ones—with few in the middle range. The researchers...

3 Comments

Ryan F. Mandelbaum Ryan F. Mandelbaum Jul 24, 2018. 6 comments

Our Neighbor Andromeda May Have Cannibalized Another Galaxy

Our Neighbor Andromeda May Have Cannibalized Another Galaxy

Our nearest galactic neighbor, the spiral Andromeda galaxy, seems to have a history of cannibalism. New research suggests that Andromeda gobbled up another large galaxy some two billion years ago.

Galactic histories are rife with uncertainty and chaos—but how much chaos? New models of galactic formation demonstrate that Andromeda may have undergone one big merger with another galaxy, whose...

6 Comments

George Dvorsky George Dvorsky Jul 17, 2018. 17 comments

Every Tiny Speck of Light in This Image Is a Galaxy

Every Tiny Speck of Light in This Image Is a Galaxy

To help us grok the immensity of the cosmos, the European Space Agency has released a remarkable image of space in which every point is an entire galaxy. If you didn’t feel insignificant before seeing this, you sure as hell will now.

As The Hitchhiker’s Guide to the Galaxy aptly reminds us, space is big—so big that our puny minds can scarcely appreciate how “vastly, hugely, mind-bogglingly big...

17 Comments

Ryan F. Mandelbaum Ryan F. Mandelbaum Jul 15, 2018. 5 comments

Can We Measure Our Own Galaxy Speeding Through Space?

Can We Measure Our Own Galaxy Speeding Through Space?

You’re probably sitting still, right? Wrong, absolutely wrong. Not only are you on a spinning orb, but you’re also traveling around 70,000 miles per hour around a star, in a galaxy that, observations imply, is sailing through space at over a million miles per hour.

If the above numbers seem shocking, they shouldn’t be. The laws of physics look and feel the same for any object so long as it’s...

5 Comments

Ryan F. Mandelbaum Ryan F. Mandelbaum Jun 24, 2018. 9 comments

Einstein's Theory of Gravity Passes Enormous Test on a Galaxy

Einstein's Theory of Gravity Passes Enormous Test on a Galaxy

It would be hard to overstate how resilient the theory of general relativity has been. In its hundred-plus-year history, it’s managed to predict things far beyond the capabilities of 1910s experiments, and it withstands every new test scientists throw at it.

This time around, researchers flipped typical experiments on their head. Often, scientists look at how much an object bends the fabric of...

9 Comments

George Dvorsky George Dvorsky Jun 21, 2018. 3 comments

Our Best View Yet of the Galaxy’s Massive Electromagnetic Loop

Our Best View Yet of the Galaxy’s Massive Electromagnetic Loop

Scientists working with the Planck Satellite have produced a new polarization map of the Milky Way in microwaves, providing an unprecedented view of a rather dramatic electromagnetic loop discovered over a half-century ago.

Above: Loop 1, marked by the dashed ellipse, is the yellow feature above centre, shading to purple, and the purple arc below centre. The colours represent the angle of the...

3 Comments

Daniel Kolitz Daniel Kolitz Apr 30, 2018. 2 comments

What Shapes Are Things in Outer Space?

What Shapes Are Things in Outer Space?
Giz AsksIn this Gizmodo series, we ask questions about everything from space to butts and get answers from a variety of experts.  

It’s an orgy of geometry, here on Earth. You got all kinds of shapes: Squares, trapezoids, even the occasional rhombus. Apples, desk-chairs, and dandelions—just an abundance of shape-having stuff. Outer space, in contrast, is minimally decorated: asteroids, stars,...

2 Comments

Ryan F. Mandelbaum Ryan F. Mandelbaum Apr 29, 2018. 13 comments

What's the Best Astronomical Object in Your Zodiac Sign?

What's the Best Astronomical Object in Your Zodiac Sign?

It’s true that astrology is not science—there is no evidence to support that personal traits or mystical truths have anything to do with the Sun and the planets’ locations in the sky at the time you were born. But there is an intersection with astronomy, the real science behind the Sun, the stars, and what goes on in our night sky.

And if you really take a look at the constellation your zodiac...

13 Comments

Ryan F. Mandelbaum Ryan F. Mandelbaum Apr 26, 2018. 13 comments

Tomorrow's Star Map Release Could Revolutionize Our Understanding of Astronomy 

Tomorrow's Star Map Release Could Revolutionize Our Understanding of Astronomy 

Astronomers from the European Space Agency’s Gaia mission will release the biggest map of our galaxy ever tomorrow, using data collected by the Gaia space telescope. That includes 1.7 billion stars, as well as new information that could potentially solve some cosmic mysteries.

The ESA’s Gaia telescope launched in 2013 and soon after began its galaxy-mapping mission. Back in 2016, it released...

13 Comments

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