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Universe’s First Stars Appeared 100 Million Years Later than Thought

Zoom on the CMB polarization, filtered to show mostly the signal detected on scales around 5 degrees on the sky. Image credit: ESA / Planck Collaboration.
Feb 6, 2015 by News Staff

Thanks to new data from European Space Agency’s Planck space telescope, researchers have found that the reionization – one of the most important processes in cosmology as it is associated with the formation of the first stars – occurred 550 million years after the Big Bang, approximately 100 million years later than previously thought. A visualization of the polarization of the CMB, as detected by Planck. The CMB is a snapshot of the...

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The Hubble image on the left (unlabeled at top left, labeled at bottom left) shows the beginning of the event, which took place on January 24, 2015. From left to right the moons Callisto and Io are above Jupiter's cloud tops. The shadows from Europa (not seen in the image), Callisto, and Io are strung out from left to right. Near the end of the event, approximately 42 minutes later (right-side image), Europa has entered the frame at lower left. Slower-moving Callisto is above and to the right of Europa. Fastest-moving Io is approaching the eastern limb of the planet; its shadow is no longer visible on Jupiter. Europa's shadow is toward the left side of the image, and Callisto's shadow to the right. Missing from the sequence is the moon Ganymede, which was outside Hubble's field of view and too far from Jupiter in angular separation to be considered part of the conjunction. The moons in these photos have distinctive colors. The ancient, cratered surface of Callisto is brownish; the smooth icy surface of Europa is yellow-white; and the volcanic, sulfur-dioxide surface of Io is orange. The apparent fuzziness of some of the shadows depends on the moons' distances from Jupiter. The farther away a moon is from the planet, the softer the shadow, because the shadow is more spread out across the disk. The images were taken with Hubble's Wide Field Camera 3 in visible light. Image credit: NASA / ESA / Hubble Heritage Team / STScI / AURA.

Hubble Sees Triple Transit of Galilean Moons

Feb 6, 2015 by News Staff

The Wide Field Camera 3 on NASA’s Hubble Space Telescope has captured a rare look at three of Galilean moons – Io, Callisto, and Europa –...

The water frog Telmatobius ventriflavum. Image credit: Alessandro Catenazzi / CC-BY 4.0.

New Water Frog Species Discovered in Central Peru

Feb 5, 2015 by News Staff

Biologists from the United States and Peru have described a colorful new species of water frog from the Peruvian Andes. The water frog Telmatobius ventriflavum....

The Eastern emerald elysia (Elysia chlorotica). Image credit: Patrick Krug.

Eastern Emerald Elysia Steals Genes from Algae to Live Like Plant

Feb 5, 2015 by News Staff

A new study reported in the Biological Bulletin provides the first direct evidence that the chromosomes of a sea slug called the Eastern emerald elysia...

Penta-Graphene: Scientists Discover New Allotrope of Carbon

Feb 5, 2015 by News Staff

An international team of scientists, led by Prof Puru Jena of Virginia Commonwealth University in Richmond, has discovered a new structural variant of...

The image of Pluto and its moon Charon, taken by New Horizons spacecraft on January 27, was magnified few times to make the objects more visible. Image credit: NASA / Johns Hopkins University Applied Physics Laboratory / Southwest Research Institute.

New Horizons Captures New Images of Pluto, Charon

Feb 5, 2015 by News Staff

NASA’s New Horizons spacecraft has acquired new images of the Pluto system. The images, taken with spacecraft’s Long-Range Reconnaissance Imager (LORRI)...

Fossil Rodent Josephoartigasia May Have Used Its Front Teeth Like Tusks

Feb 4, 2015 by News Staff

Josephoartigasia monesi – a giant rodent that lived in what is now Uruguay from the Pliocene to early Pleistocene, 4 to 2 million years ago –...

Silicene transistor: Vg, Vs and Vd are the gate, source and drain voltages. Image credit: Li Tao

Researchers Create First Silicene Transistor

Feb 4, 2015 by News Staff

An international team of scientists led by Dr Li Tao from the University of Texas at Austin, Texas, has created the first transistor made of silicene,...

This image shows the famous Trifid Nebula to the right of center; it appears as faint and ghostly at these infrared wavelengths when compared to the familiar view at visible wavelengths; this transparency has brought its own benefits - many previously hidden background objects can now be seen clearly; among these are two newly discovered Cepheid variable stars, the first ever spotted on the far side of our Milky Way Galaxy near its central plane. Image credit: ESO / VVV consortium / D. Minniti.

Astronomers Zoom in on Trifid Nebula, Discover Two Distant Cepheids

Feb 4, 2015 by News Staff

A team of astronomers led by Dr István Dékány from Millennium Institute of Astrophysics and the Universidad Católica de Chile, Santiago, Chile, has...

Biologists Find Deep-Sea Sulfur Bacteria that Have Not Evolved in 2.3 Billion Years

Feb 4, 2015 by News Staff

A group of researchers led by Prof J. William Schopf from the University of California, Los Angeles, has discovered a type of deep-sea microorganism that...

This image shows the peculiar galaxy Arp 230. Image credit: ESA / Hubble / NASA.

Hubble Space Telescope Captures Galaxy Arp 230

Feb 4, 2015 by News Staff

A new image from NASA’s Hubble Space Telescope shows Arp 230, a peculiar galaxy located at a distance of about 80 million light-years. This image shows...

Northern bald ibises (Geronticus eremita) take turns saving energy by following in another bird's wake. Image credit: M Unsöld.

Northern Bald Ibises Take Turns When Flying in V-Shaped Formation

Feb 3, 2015 by News Staff

A group of ornithologists headed by Dr Bernhard Voelkl of Oxford University has found convincing evidence for ‘turn taking’ reciprocal cooperative...

Mineral actinolite. Image credit: Ingo Wölbern.

Naturally Occurring Asbestos Found in Arizona, Nevada

Feb 3, 2015 by News Staff

A team of geologists led by Dr Brenda Buck from the University of Nevada-Las Vegas has discovered naturally occurring asbestos minerals in Clark County...

This image combines X-ray data collected by XMM-Newton telescope (blue) with optical observations from Hubble (green and red). Image credit: ESA / XMM-Newton / Y.-H. Chu / R.A. Gruendl / M.A. Guerrero / N. Ruiz / NASA / Hubble team / A. Hajian / B. Balick.

Astronomers Release New Image of Planetary Nebula NGC 3242 (Jupiter’s Ghost)

Feb 3, 2015 by News Staff

Using two orbiting space telescopes, astronomers have captured a striking new image of the nebula NGC 3242. This image combines X-ray data collected by...

Northwest Africa 7034. Image credit: NASA.

NWA 7034: Unique Meteorite Likely Came from Martian Dark Plains

Feb 2, 2015 by News Staff

Spectroscopic measurements of a Martian meteorite called Northwest Africa (NWA) 7034 are a spot-on match with orbital measurements of the Red Planet’s...

OSIRIS instrument on the Rosetta spacecraft captured this image of Comet 67P/Churyumov–Gerasimenko on November 12, 2014; marked is what Rosetta scientists believe to be the Philae lander above the rim of the large depression – named Hatmehit – on the comet’s small lobe. Image credit: ESA / Rosetta / MPS for OSIRIS team / UPD / LAM / IAA / SSO / INTA / UPM / DASP / IDA.

Rosetta Analyzes Dusty Surface of 67P/Churyumov–Gerasimenko

Feb 2, 2015 by News Staff

Rosetta mission scientists have announced the first results from the COmetary Secondary Ion Mass Analyser (COSIMA), one of Rosetta’s three dust analysis...

2,500-year-old stone carving at the Gebel el Silsila quarry depicts a pharaoh and two deities. Image credit: Gebel el Silsila Survey Project.

2,500-Year-Old Pharaonic Carvings, Two Obelisks Discovered in Egypt

Jan 31, 2015 by News Staff

A unique 2,500-year-old wall relief showing an unidentified pharaoh and two deities, a rare depiction of obelisks being cut and loaded onto boats, and...

3D reconstruction of SNR Cassiopeia A provides the first detailed look at the distribution of stellar debris following a supernova explosion; the blue-to-red colors correspond to the varying speed of the emitting gas along our line of sight; the background is a Hubble composite image of the remnant. Image credit: Dan Milisavljevic / Robert Fesen / NASA / ESA / Hubble Heritage Team.

Cassiopeia A: Astronomers Create 3D Map of Supernova Remnant’s Interior

Jan 30, 2015 by News Staff

Astronomers Dr Dan Milisavljevic of Harvard-Smithsonian Center for Astrophysics and Dr Robert Fesen of Dartmouth College have generated a three-dimensional...

Numerically calculated and experimentally observed optical polarization Möbius strips. Image credit: Thomas Bauer et al, 10.1126/science.1260635.

Physicists Create Möbius Strips out of Light

Jan 30, 2015 by News Staff

An international team of physicists, led by Dr Thomas Bauer from the Max Planck Institute for the Science of Light and the Friedrich-Alexander-University...

This image, taken with the Wide Field Camera 3 and the Advanced Camera for Surveys on Hubble, reveals the correlation of the gas clouds and stars in NGC 7714. The picture not only reveals the intricate structure of the galaxy, but also shows many other objects that are much further away. Image credit: NASA / ESA / A. Gal-Yam, Weizmann Institute of Science.

NASA’s Hubble Sees Starburst Galaxy NGC 7714

Jan 30, 2015 by News Staff

Astronomers using NASA’s Hubble Space Telescope have obtained a remarkable new view of the galaxy NGC 7714. This image, taken with the Wide Field Camera...

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