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<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

Astronaut Photography

by NASA Earth Observatory and

Venice as photographed by crew members aboard Space Station Alpha.: Image Courtesy Earth Observatory Astronauts are trained in scientific observation of ecological, geological, geographic, oceanographic, environmental, and meteorological phenomena. They are also instructed in the use of photographic equipment and techniques. Preflight training helps the astronauts make informed decisions on which areas and phenomena to photograph. Specific areas of scientific interest are selected before each flight by a group of scientists. The astronauts receive intensive training, in-flight aids, and messages from the ground to help them locate these sites that are of scientific interest.

An astronaut trained in the Earth sciences can rapidly identify and photograph interesting and unexpected phenomena, interpret what has been observed, and modify planned activities as needed. Near real-time information exchange between the crew and scientists expedites the recording of dynamic events of geological, oceanographic, environmental, and meteorological importance. Critical environmental monitoring sites are photographed repeatedly over time; some have photographic records dating back to the Gemini and Skylab missions. Earth limb pictures taken at sunrise and sunset document changes in the Earth's atmospheric layers. Photographs of hurricanes, thunderstorms, squall lines, island cloud wakes, and the jet stream supplement weather satellite images by offering high-resolution stereoscopic coverage of such phenomena.

Astronaut photography provides several unique contributions to the range of Earth Science information available from NASA (Lulla et al. 1996). First, the images are readily accessible to the public -- they are non-proprietary, can distributed in digital form on the Internet (at the Gateway to Astronaut Photography of Earth), and are in a real-color photographic form that is easily interpretable by non-scientists. Second, the unique aspects of handheld data make it possible to view the Earth in ways that are not common from other sensors. In addition to images looking directly down at the ground, astronauts can look obliquely at haze in the atmosphere, or use sunglint to view water boundaries and wave features. Third, because the photographs are in the public domain, they provide a low-cost alternative data source for cases where other satellite imagery cannot be acquired or is not sufficient. Such cases often include studies in developing countries, in areas that have not usually been targets for major satellites, needing supplemental low-cloud data, requiring a time series, or requiring a large number of images.

The coronal mass ejections, or CMEs, leaving the Sun and traveling through the solar system.
Blast Wave Blows Through the Solar System

Although the Sun provides the means for life on Earth, it has a dark side - the Sun regularly sends massive solar explosions of radiative plasma with the intensity of a billion megaton bombs hurtling ...
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Quick Change Artist

The word transformation means one thing changing into another, like Dr. Jekyl changing into Mr. Hyde. In mathematics, sets of numbers often go through transformations. For example, the numbers represe ...
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Galaxy Cluster RDCS 1252.9-2927

A color composite image of the galaxy cluster RDCS 1252.9-2927 shows the X-ray (purple) light from 70-million-degree Celsius gas in the cluster, and the optical (red, yellow and green) light from the ...
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Science Quote

Albert Einstein Photo

'We should take care not to make intellect our god; it has powerful muscles but no personality.'

Albert Einstein

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