Physics & Astronomy News

<p>A drawing illustrates the unusual topological landscape around a pair of features known as exceptional points (red dots), showing the emergence of a Fermi arc (pink line at center), and exotic polarization contours that form a Mobius-strip-like texture (top and bottom strips).</p>

<p>Courtesy: MIT</p>
New exotic phenomena seen in photonic crystals
Researchers observe, for the first time, topological effects unique to an 'open' system.
<p>ESA Astronauts training in terrestrial lava tubes in Lanzarote during the PANGEA 2016 course. Credit: ESA/L. Ricci</p>
Lava Tubes: Human Habitats on the Moon and Mars?
Lava tubes, underground caves created by volcanic activity, could provide protected habitats large enough to house streets on Mars or even towns on the Moon.

<p>PR Image heic1715a</p>

<p>The binary asteroid 288P (artist’s impression)</p>
Hubble Discovers a Unique Type of Object in the Solar System
Astronomers have observed the intriguing characteristics of an unusual type of object in the asteroid belt between Mars and Jupiter.
<p>Professor Kyoung Jin Choi (left) and Yeon Soo Jung (right) are examining a wearable TEG. As shown right, the output voltage of the W-STEG attached to clothes was measured to be 52.3 mV.</p>
Wearable Solar Thermoelectric Generator
UNIST has introduced a new advanced energy harvesting system, capable of generating electricity by simply being attached to clothes, windows, and outer walls of a building.

Observation confirms Einsteins general theory of relativity.
Astronomers have used NASA Hubble Space Telescope to repeat a century-old test of Einsteins general theory of relativity
Gravitational Wave Kicks Monster Black Hole Out of Galactic Core
Astronomers have uncovered a supermassive black hole that has been propelled out of the center of a distant galaxy by what could be the awesome power of gravitational waves.
Milky Way-like Galaxies in Early Universe Embedded in 'Super Halos'
By harnessing the extreme sensitivity of the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers have directly observed a pair of Milky Way-like galaxies seen when the universe was only eight percent of its current age.

Science Facts

Saturn: The Basics

by NASA Headquarters and

: Image Courtesy NASA To ancient astronomers, Saturn was a wandering light near the edge of the known universe. The planet and its rings have been objects of beauty and wonder ever since Galileo noticed the 'cup handles' that seemed attached to a round world. Saturn is a smaller version of Jupiter, made up of a similar mix of gases, mostly the very light hydrogen and helium. Like Jupiter, all we see of Saturn is the tops of its clouds. With their subdued hues of yellow, gray and brown, they lack the sharp, brightly colored belts of Jupiter. Above the clouds there seems to be a high haze of frozen ammonia crystals. Saturn's rings, its best known feature since Galileo's time, stretch far out around the planet, extending to more than half the distance from the Earth to the Moon. They actually consist of a series of individual rings separated by small gaps and composed of huge numbers of small particles.

Saturn has at least 15 moons, some only recently discovered by passing spacecraft. Among those that have long been known is Titan, one of the largest moons in the solar system, massive enough to retain a thick, cold atmosphere that obscures any view of its surface. Organic compounds are present on Titan, and it has occasionally been speculated that life may exist there.

Saturn is far out. A billion miles from Earth, the planet was not reached by any spacecraft until September, 1979, when Pioneer Saturn, after a six-year trip by way of Jupiter, flew past the rings to within 21,000 kilometers (13,000 miles) of Saturn's cloud tops. Voyager 1, with better, more sophisticated instruments (which had explored Jupiter in 1979) reached Saturn slightly more than a year after Pioneer. On November 12, 1980, Voyager 1 ducked under the rings, passed Saturn at 124,000 kilometers (77,000 miles) above the cloud tops, crossed the ring plane again, and headed out of the solar system at 90,000 kilometers per hour (56,000 miles per hour). In a few hectic days, the television cameras and other instruments of Voyager 1 told us more about Saturn, its rings, and its moons than was learned in all the centuries that people have studied this strange and beautiful world.

An artist
Not Quite A Planet

Astronomers have dubbed it 'Quaoar' (pronounced kwa-whar) after a Native American god. It lies a billion kilometers beyond Pluto and moves around the Sun every 288 years in a near-perfect circle. Unti ...
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Does Earth Have Its Own Neon Sign?

You might wonder what the Northern Lights and neon signs have in common. Actually, a lot! What makes luminous colors shimmer across the Northern sky? The answer is in the Sun. Charged particles ar ...
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A Chandra X-ray image of The Antennae revealing loops of hot gas spreading out into intergalactic space, huge multimillion degree clouds, and bright emissions from neutron stars and black holes. The image is color coded: low, medium and high energy X-rays are red, green and blue.
The Antennae

NASA's Chandra X-ray Observatory has discovered rich deposits of neon, magnesium, and silicon in a pair of colliding galaxies known as The Antennae. The deposits are located in vast clouds of hot gas. ...
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Science Quote

E.E.  Cummings Photo

'I thank You God for this most amazing day; for the leaping greenly spirits of trees and a blue true dream of sky; and for everything which is natural which is infinite.'

E.E. Cummings

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