Image: Hubble gets in on a galactic gathering
15 hours ago
Nearly as deep as the Hubble Ultra Deep Field, which contains approximately 10,000 galaxies, this incredible image from the Hubble Space Telescope reveals thousands of colorful galaxies in the constellation of Leo (The Lion). ...
Next time you're late to work, blame dark energy
May 27, 2016
Ever since Lemaitre and Hubble's first proposed it in the 1920s, scientists and astronomers have been aware that the universe is expanding. And from these observations, cosmological theories like the Big Bang Theory and the ...
A young mammoth cluster of galaxies sighted in the early universe
May 25, 2016
Astronomers have uncovered evidence for a vast collection of young galaxies 12 billion light years away. The newly discovered "proto-cluster" of galaxies, observed when the universe was only 1.7 billion years old (12% of ...
Scientist suggests possible link between primordial black holes and dark matter
May 24, 2016
Dark matter is a mysterious substance composing most of the material universe, now widely thought to be some form of massive exotic particle. An intriguing alternative view is that dark matter is made of black holes formed ...
Why do animals hide their warning signals? A paradox explained
May 19, 2016
Scientists have understood quite well why so many poisonous animals have brightly colored bodies - the colors send a message to the predators: " don't eat me, or you'll get sick and die". But why some toxic animals actually ...
Combining nanotextured surfaces with the Leidenfrost effect for extreme water repellency
May 17, 2016
Combining superhydrophobic surfaces with Leidenfrost levitation—picture a water droplet hovering over a hot surface rather than making physical contact with it—has been explored extensively for the past decade by researchers ...
New evidence that humans settled in southeastern US far earlier than previously believed
May 13, 2016
The discovery of stone tools found in a Florida river show that humans settled the southeastern United States far earlier than previously believed—perhaps by as much as 1,500 years, according to a team of scientists that ...
New research estimates probability of mega-earthquake in the Aleutians
May 13, 2016
A team of researchers from the University of Hawai'i at Mānoa (UHM) published a study this week that estimated the probability of a Magnitude 9+ earthquake in the Aleutian Islands—an event with sufficient power to create ...
Relativity of rotational motion confirmed
May 12, 2016
It has been one hundred years since the publication of Einstein's general theory of relativity in May 1916. In a paper recently published in EPJ Plus, Norwegian physicist Øyvind Grøn from the Oslo and Akershus University ...
Why is space three-dimensional?
May 03, 2016 feature
(Phys.org)—The question of why space is three-dimensional (3D) and not some other number of dimensions has puzzled philosophers and scientists since ancient Greece. Space-time overall is four-dimensional, or (3 + 1)-dimensional, ...