Physicists have used a seven-qubit quantum computer to simulate the scrambling of information inside a black hole, heralding a future in which entangled quantum bits might be used to probe the mysterious interiors of these bizarre objects.
Category: cosmology – Page 420
Ninja-like Black Hole Discovered Gobbling up a Gas Cloud
How do you find something you can’t see? Japanese astronomers have hunted a hidden black hole by observing the movement of a cloud of gas it is consuming, located 25,000 light-years away from Earth. This is the first intermediate-sized black hole ever found, giving clues to how black holes merge and grow.
The Habitable Planet Finder Is a New Tool to Locate Earth-like Exoplanets
Astronomers have a new tool to help them find habitable planets in our galaxy: the Habitable Planet Finder (HPF), a high-precision spectrograph. The HPF can be used to detect worlds which have some key qualities, like being a rocky planet orbiting an red dwarf. A red dwarf, also known as an M-dwarf, is a type of star that is relatively cool, small, and dim, and is somewhat similar to our Sun (which is classified as a white or yellow dwarf.) Red dwarfs are common in the Milky Way, like the nearby Barnard’s star, making them good hunting grounds for exoplanets.
“About 70 percent of the stars in our galaxy are M-dwarfs like Barnard’s star, but the near-infrared light they emit has made it difficult for astronomers to see their planets with ordinary optical telescopes,” Paul Robertson, assistant professor of physics and astronomy at the University of California, Irvine, said in a statement. “With the HPF, it’s now open season for exoplanet hunting on a greatly expanded selection of stellar targets.”
The HPF measures subtle changes in the color of light given off by stars, which can indicate the influence of an orbiting planet. In particular, it searches for planets with a low mass located within the “habitable zone” of their stars where surface water can exist. The spectrograph has already demonstrated its usefulness by confirming the existence of a super-Earth which is orbiting Barnard’s star during its commissioning, and should be able to detect many more planets similar in size to Earth in the future.
New Theory: “Mirror Image” of Our Universe Existed Before Big Bang
A bizarre theory could explain dark matter.
Mirror Image
The Big Bang didn’t just result in our familiar universe, according to a mind-bending new theory — it also generated a second “anti-universe” that extended backwards in time, like a mirror image of our own.
A new story in Physics World explores the new theory, which was proposed by a trio of Canadian physicists who say that it could explain the existence of dark matter.
Check Out This Incredible X-Ray ‘Superbubble’ That’s Nearly 5,000 Light-Years Wide
This incredible image shows a pair of “nuclear superbubbles,” one over 4,900 light-years across and the other over 3,500 light-years. They’re emanating from the center of the galaxy NGC 3079, likely the result of a central black hole consuming matter and spewing it back out.
Or, the superbubbles could be from a starburst, a faster-than-usual stellar birth. The bubble-like shape could come from shock waves and compression within the cooler gas. But there’s still an element of mystery here, as the smaller bubble seems to be emanating synchrotron emission, or high-energy x-rays from spiraling electrons, while the larger bubble isn’t.
There’s a black hole that can let humans erase their past, astrophysicists say
Forget the past.
However, a study from Berkley University suggests that entering a specific black hole in the universe can actually erase everything that had happened in a person’s past. Not only that, it could also give humans infinite futures!
But, how is that even possible?
According to NASA, “a black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because the matter has been squeezed into a tiny space. This can happen when a star is dying.” In fact, indy100 mentioned in their article that, physicists have created a theoretical term called “cosmic censorship” to further explain the clash between the rules of the universe and the lawlessness of black holes. While it’s possible to survive a black hole, you should also keep in mind that it has the ability to “spaghettify” you.