background preloader

Space science

Facebook Twitter

Space science – study of everything in outer space.

This has sometimes been called astronomy, but recently astronomy has come to be regarded as a division of broader space science, which has grown to include other related fields, such as studying issues related to space travel and space exploration (including space medicine), space archaeology and science performed in outer space (see space research). Hubble Finds Universe Expanding Faster Than Expected. This Hubble Space Telescope image shows one of the galaxies in the survey to refine the measurement for how fast the universe expands with time, called the Hubble constant.

Hubble Finds Universe Expanding Faster Than Expected

Credits: NASA, ESA and A. Riess (STScI/JHU) Astronomers using NASA’s Hubble Space Telescope have discovered that the universe is expanding 5 percent to 9 percent faster than expected. “This surprising finding may be an important clue to understanding those mysterious parts of the universe that make up 95 percent of everything and don’t emit light, such as dark energy, dark matter and dark radiation,” said study leader and Nobel Laureate Adam Riess of the Space Telescope Science Institute and Johns Hopkins University, both in Baltimore, Maryland.

The results will appear in an upcoming issue of The Astrophysical Journal. Riess’ team made the discovery by refining the universe’s current expansion rate to unprecedented accuracy, reducing the uncertainty to only 2.4 percent. Strange & Unexplained Things in Science: The Star that "Should not Exist" ? It doesn’t have a very catchy name, but star SDSS J102915+17297 has a unique story rooted in its unexplained and somewhat mysterious origins.

Strange & Unexplained Things in Science: The Star that "Should not Exist" ?

Located in the constellation Leo, the star in question, also known as Caffau’s star, was formed around 13 billion years ago, making it one of the oldest stars in our known universe. However, astronomers are still baffled as to how it was formed, and how it has survived this long. Discovery and Survival. Black holes mysteriously align. Deep radio imaging by researchers at the University of Cape Town (UCT) and University of the Western Cape (UWC) in South Africa has revealed that supermassive black holes in a region of the distant universe are all spinning out radio jets in the same direction — most likely a result of primordial mass fluctuations in the early universe.

Black holes mysteriously align

The new result is the discovery for the first time of an alignment of jets of galaxies over a large volume of space, a finding made possible by a three-year deep radio imaging survey of the radio waves coming from a region called ELAIS-N1 using the Giant Metrewave Radio Telescope (GMRT). "Since these black holes don't know about each other, or have any way of exchanging information or influencing each other directly over such vast scales, this spin alignment must have occurred during the formation of the galaxies in the early universe," Taylor noted. The finding wasn't planned for.

Warp Speed: The Hype of Hyperspace. Hyperspace travel is the premise that it's possible to travel at speeds faster than that of light when energy from other dimensions is harnessed, and is an idea much used by science fiction writers.

Warp Speed: The Hype of Hyperspace

One famous example is "Star Trek," where the starship Enterprise jumps from star system to star system to visit other planets. "If Captain Kirk were constrained to move at the speed of our fastest rockets, it would take him a hundred thousand years just to get to the next star system," said Seth Shostak, an astronomer at the Search for Extraterrestrial Intelligence (SETI) Institute in Mountain View, Calif, in a 2010 interview with Space.com's sister site LiveScience. "So science fiction has long postulated a way to beat the speed of light barrier so the story can move a little more quickly.

" Astronomers Have Discovered a Super-Fast Star System That Seems to Break Current Physics Models. Thousands of light-years away, on the outskirts of the Milky Way, astronomers have detected something no one’s ever seen before – a binary star (two stars orbiting a common centre of mass) that’s moving so fast, it’s clocked speeds that almost rival the escape velocity of our galaxy.

Astronomers Have Discovered a Super-Fast Star System That Seems to Break Current Physics Models

What does that mean? Something must be helping this star system gather such incredible momentum, and until now, the best explanation we had for hyper-velocity stars is that they were being propelled by the supermassive black holes that lurk in the centre of a galaxy. But here’s the thing: this binary star is nowhere near a supermassive black hole. Named PB3877, and located about 18,000 light-years away from Earth, this binary star is not the first hyper-velocity star we’ve found in our galaxy. Astronomers have so far identified more than 20 hyper-velocity stars that seem hell-bent on getting the eff out of our cosmic neighbourhood. Now we have something that puts this hypothesis into serious question.

Elusive Dark Matter Galaxy Revealed by Cosmic Lens. Sorry, but Earth Is a Spark of Life in a Yawning, Dead Universe. Hints that 'Planet Nine' may exist on edge of our solar system. Is there anybody out there?

Hints that 'Planet Nine' may exist on edge of our solar system

Two astronomers say they have found evidence that a planet around 10 times the mass of Earth is lurking in the outer reaches of the solar system, on an orbit that comes no closer than 200 times the distance between the sun and Earth. Dubbed Planet Nine, it hasn’t been seen directly. Comets can't explain weird 'alien megastructure' star after all. The weirdest star in the cosmos just got a lot weirder.

Comets can't explain weird 'alien megastructure' star after all

And yes, it might be aliens. Known as KIC 8462852, or Tabby’s star, it has been baffling astronomers for the past few months after a team of researchers noticed its light seemed to be dipping in brightness in bizarre ways. Proposed explanations ranged from a cloud of comets to orbiting “alien megastructures”. How NASA's Flying Observatory Revealed Secrets About Pluto. Our Closest Look Ever at Pluto’s Weird, Beautiful Surface - HowStuffWorks. Explore Fictional Space With This Cool Poster. The universe is constantly expanding, as is the wealth of fictional entities we imagine to occupy that space. iam8bit took the time to collect a good chunk of these space-dwelling planets, characters, and vehicles—and put them on a poster.

Explore Fictional Space With This Cool Poster

The poster, which is beautifully illustrated by Edison Yan, features over 70 planets and over 50 vessels and characters. The objects come from movies, television shows, books, comics, and more, but you'll have to figure out what's from where on your own. You can also check out iam8bit's video game poster, for more illustrated map fun. Weird Universe: 10 of the Strangest Objects Ever Discovered. Image Credit: EasyJet To quote the late Douglas Adams (the beloved author of “The Hitchhiker’s Guide to the Galaxy”): “Space is big.

Weird Universe: 10 of the Strangest Objects Ever Discovered

You just won’t believe how vastly, hugely, mind- bogglingly big it is. Dark Flow: A Mysterious Force From Beyond Local Universe. The universe is a far stranger place than most of us know.

Dark Flow: A Mysterious Force From Beyond Local Universe

From giant diamond stars to exoplanets coated in hot ice, every day, the list grows longer. Sometimes, these oddities can be explained within the confines of science, but not always. One of the most compelling pertains to a relatively new cosmic phenomenon called dark flow. Before we get into that, let’s take a look at some background: The Observable Universe: The universe is essentially divided into two parts: first, there is the ‘observable’ universe, which has a diameter of approximately 93 billion light-years (13.7 billion light-years in every direction), and then we have the actual universe, which has no set diameter. (Source) We know that something exists beyond our cosmic horizon, we are just unable to see just what. The ‘Dark Flow’ Cosmic Quandary: This brings us to a little something called dark flow. Meet Quaoar, the Planetoid Beyond Pluto. An artist’s conception of Quaoar and its small moon Weywot.Credit: NASA/JPL-Caltech/R.

Hurt (SSC-Caltech) Most of us are familiar with the larger planets in our solar system, but once we get to Neptune, things start to get a little murky. This isn’t too surprising, as Pluto (the most famous dwarf planet and the first major object that appears after one passes Neptune) was only first visited on July 14, 2015, which was only just a few short months ago. The Most Mysterious Star in Our Galaxy. In the Northern hemisphere’s sky, hovering above the Milky Way, there are two constellations—Cygnus the swan, her wings outstretched in full flight, and Lyra, the harp that accompanied poetry in ancient Greece, from which we take our word “lyric.”

Between these constellations sits an unusual star, invisible to the naked eye, but visible to the Kepler Space Telescope, which stared at it for more than four years, beginning in 2009. “We’d never seen anything like this star,” says Tabetha Boyajian, a postdoc at Yale. “It was really weird. We thought it might be bad data or movement on the spacecraft, but everything checked out.”

Kepler was looking for tiny dips in the light emitted by this star. What Are Planck Stars? How Do They Differ From Black Holes? No matter how much evidence there is supporting their existence, black holes remain firmly in the realm of theoretical physics. Because of their properties—their structure, the fact that they emit no light naturally, where they are found and how they work—they lurk in the shadows.

However, not all scientists, including world-renowned physicist Stephen Hawking, assert that traditional black holes are necessary to the framework of modern physics (they are, however, perfectly viable mathematical solutions, no matter how you shake it)—in fact, some go a step further and say that we should replace them with one of many different alternatives.. Some of these alternatives include gravastars, wormhole hybrids and quark stars.

Last year, two astrophysicists—Carlo Rovelli (University of Toulon, France) and Francesca Vidotto (Radboud University in The Netherlands)—introduced another: a theoretical object called a Planck star. Chronology of Cosmology. Chronology of Rocket and Missile Technology. Space science. Space science – study of everything in outer space.[1] This has sometimes been called astronomy, but recently astronomy has come to be regarded as a division of broader space science, which has grown to include other related fields,[2] such as studying issues related to space travel and space exploration (including space medicine),[3] and science performed in outer space (see space research).

Astronomy

Endeavors. Astrobiology. Astrochemistry. Astrophysics. Commercialization of space. Planetary science.