Tag Archives: Galaxy

Now We Know How Fast We’re Traveling Through Space

How Does Earth Move Through Space? The Big Picture

     Ask a scientist for our cosmic address, and you’ll get quite a mouthful. Here we are, on planet Earth, which spins on its axis and revolves around the Sun, which orbits in an ellipse around the center of the Milky Way, which is being pulled towards Andromeda within our
By Ethan Siegel

local group, which is being pushed around inside our cosmic supercluster, Laniakea, by galactic groups, clusters, and cosmic voids, which itself lies in the KBC void amidst the large-scale structure of the Universe. After decades of research, science has finally put together the complete picture, and can quantify exactly how fast we’re moving through space, on every scale.

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New Discovery of ‘Dark Matter’ Galaxy

New Discovery of 'Dark Matter' Galaxy

     Astronomers have discovered a galaxy as big as the Milky Way that consists almost entirely of dark matter, a mysterious and invisible substance that scientists have been trying to figure out for decades. Only one-hundredth of one percent of the galaxy is ordinary, visible
Hanneke Weitering

matter like stars and planets. The other 99.99 percent of the stuff in this galaxy can’t be seen.

No one really knows what dark matter is made of, but scientists believe it exists because they can see the effects of its gravity on other things in space. Whatever it may be, about 80 percent of the mass in the universe is dark matter. …

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Impossible vanishing stars could be signs of advanced alien life

Finding aliens with technology far beyond our own could be as simple as catching stars or galaxies in a disappearing act.

A team of astronomers say that the next search for advanced extraterrestrial civilizations should look for stars – or even galaxies – that have vanished without a trace, as anything so unexplainable could only be due to life far more intelligent than us.

So far the results are mixed. The team found one interesting artefact that looks like it might have vanished, but they can’t be sure.

Beatriz Villarroel at Uppsala University in Sweden said to newscientist that even if the disappearance is real, there could still be an astrophysical explanation. That’s why they plan to search for this missing object (and any others found in the future), on the largest telescopes, read more.

If it is still not visible, then they will be able to rule out most astrophysical phenomena and say with more likelihood that it has vanished. Only then will they begin speculating about extraterrestrial causes.


Monster Black Hole Could Transform Entire Galaxy

Monster Black Hole Could Transform Entire Galaxy

By Calla Cofield

      A ravenous, giant black hole has belched up a bubble of cosmic wind so powerful that it could change the fate of an entire galaxy, according to new observations.

Researchers using two X-ray telescopes have identified a cosmic wind blowing outward from the supermassive black hole at the center of galaxy PDS 456. Astronomers have seen these winds before, but the authors of the new research say this is the first observation of a wind moving away from the center in every direction, creating a spherical shape.

The wind could have big implications for the future of the galaxy: It will cut down on the black hole’s food supply, and slow star formation in the rest of the galaxy, the researchers said. And it’s possible that strong cosmic winds are a common part of galaxy evolution — they could be responsible for turning galaxies from bright, active youngsters to quiet middle-agers. . . .

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Supermassive Black Hole Discovered Inside Tiny Dwarf Galaxy

Supermassive Black Hole Discovered

Supermassive Black Hole Discovered Inside Tiny Dwarf Galaxy

By David Freeman
The Huffington Post

     Talk about big things coming in little packages! Astronomers using data from the Hubble Space Telescope say they’ve discovered a ginormous black hole within one of the tiniest galaxies known to exist.

The supermassive black hole is about five times more massive than the one at the center of the Milky Way, but the dwarf galaxy in which it was found–known to astronomers as M60-UCD1–is about 500 times smaller than our own galaxy, according to NASA.

“It is the smallest and lightest object that we know of that has a supermassive black hole,” Dr. Anil C. Seth, a University of Utah astronomer and the lead author of a new paper about the discovery, said in a written statement. “It’s also one of the most black hole-dominated galaxies known.”

The discovery suggests that supermassive black holes may be twice as numerous in the nearby universe as previously thought, Nature reported.

Adding to the wonder is the fact that the dwarf galaxy is absolutely chockablock with stars. Someone living on a planet within M60-UCD1 would look up to a sky containing at least 1 million stars. The night sky here on Earth shows about 4,000 stars.

The discovery suggests that there are many other small galaxies containing supermassive black holes. What’s more, it suggests that dwarf galaxies like M60-UCD1 may actually be the remnants of larger galaxies that were ripped apart by collisions with other galaxies. . . .

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National Geographic UFO Europe Untold Stories | S01E06

Are aliens really out there? You’ve heard tales of little green men from other planets, but these are normally consigned to urban legends and sci-fi fables. However, a dossier of files released by the Ministry of Defence last year proves just how seriously some of these close encounters are taken by the government. Discover the …

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National Geographic | UFO UK: New Evidence | 2012 | HD

From National Geographic:UFO UK: New Evidence Are aliens really out there? You’ve heard tales of little green men from other planets, but these are normally consigned to urban legends and sci-fi fables. However, a dossier of files released by the Ministry of Defence last year proves just how seriously some of these close encounters are …

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New UFO Series by National Geographic!

Are we finally a step closer to understanding the great unknown and what it may – or may not – hold? Man has always been curious about what is really out there in the vastness of space, and UFO sightings have been reported for years. Now, with video footage of sightings, radar evidence and eyewitness …

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CONFIRMED: Water Ice found on Mercury!

Mercury is as cold as ice. Indeed, Mercury, the closest planet to the Sun, possesses a lot of ice — 100 billion to 1 trillion tons — scientists working with NASA’s Messenger spacecraft reported on Thursday. Sean C. Solomon, the principal investigator for Messenger, said there was enough ice there to encase Washington, D.C., in …

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