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Updated: 3 hours 39 min ago
Thanks to an amplified image produced by a gravitational lens, and the Gran Telescopio CANARIAS, a team of scientists has discovered one of the brightest galaxies known from the epoch when the universe had 20 percent of its present age.
Our solar system is located in the outer regions of the Milky Way, a disk-shaped galaxy with an approximate diameter of 100,000 light years. From Earth, its appearance can only be observed indirectly, by measuring positions and movements of stars and gas clouds. In addition to luminous stars, a substantial portion of the visible matter in our Milky Way is interstellar gas. Gas clouds in the so-called central molecular zone (CMZ) -- the innermost 1,500 light years of the Milky Way -- move on an elliptical central disk that has two spiral arms. A comprehensive model has now been used to simulate this motion.
The Sun is a solar-type star, a new study claims -- resolving an ongoing controversy about whether the star at the center of our Solar System exhibits the same cyclic behavior as other nearby, solar-type stars.
Spiral galaxies are found to be strongly rotating, with an angular momentum higher by a factor of about 5 than ellipticals. In a new study, the researchers have traced back the dichotomy in the angular momentum of spiral and elliptical galaxies to their different formation history. In particular, the low angular momentum of ellipticals is mainly originated by nature in the central regions during the early galaxy formation process.
Images of Jupiter's Great Red Spot reveal a tangle of dark, veinous clouds weaving their way through a massive crimson oval. The JunoCam imager aboard NASA's Juno mission snapped pics of the most iconic feature of the solar system's largest planetary inhabitant during its July 10 flyby.
Last year, the existence of an unknown planet in our Solar system was announced. However, this hypothesis was subsequently called into question as biases in the observational data were detected. Now astronomers have used a novel technique to analyze the orbits of the so-called extreme trans-Neptunian objects and, once again, they point out that there is something perturbing them: a planet located at a distance between 300 to 400 times the Earth-Sun separation.
MACS2129-1 is dead in the sense that it no longer produces stars. But what makes this galaxy particularly significant is the fact that, unlike many dead galaxies, which tend to be elliptical or oval-shaped, this galaxy is disk or spiral-shaped, like the Milky Way, and its stars rotate in a flattened disk, much like the Milky Way's stars.
The smallest star yet measured has been discovered by a team of astronomers. With a size just a sliver larger than that of Saturn, the gravitational pull at its stellar surface is about 300 times stronger than what humans feel on Earth.
'Synthetic observations' simulating nascent planetary systems could help explain a puzzle -- how planets form -- that has vexed astronomers for a long time.
A rich inventory of molecules has been found at the center of an exploded star for the very first time, outlines a new report.
Although IC 342 is bright, the galaxy sits near the equator of the Milky Way's disk, thick with glowing cosmic gas, bright stars, and dust, report investigators.
By applying a new computational analysis to a galaxy magnified by a gravitational lens, astronomers have obtained images 10 times sharper than what Hubble could achieve on its own.
Researchers are using the largest, most intense lasers on the planet, to for the first time, show the general public how to recreate the effects of supernovae, in a laboratory.
Sixty potential new 'hot Jupiters' -- highly irradiated worlds that glow like coals on a barbecue grill and are found orbiting only 1% of Sun-like stars -- have been discovered by researchers.
An exoplanet has been discovered by an international team of astronomers by direct imaging using SPHERE, an instrument designed and developed by a consortium of 12 European institutes on the Very Large Telescope ESO, based in Chile. The instrument, which corrects in real time the terrestrial atmospheric turbulences and occults the light of the star, allows to take a real «photography» of the exoplanet.
Our galaxy could have 100 billion brown dwarfs or more according to a recent survey of dense star clusters, where brown dwarfs are abundant.
Astronomers may have found an answer to the 25-year-old mystery of how planets form in the aftermath of a supernova explosion.
The lakes of liquid methane on Saturn's moon, Titan, are perfect for paddling but not for surfing. New research has found that most waves on Titan's lakes reach only about 1 centimeter high.
A group of astronomers have shown that the fastest-moving stars in our galaxy -- which are traveling so fast that they can escape the Milky Way -- are in fact runaways from a much smaller galaxy in orbit around our own.
ESO's Very Large Telescope (VLT) has captured a magnificent face-on view of the barred spiral galaxy Messier 77. The image does justice to the galaxy's beauty, showcasing its glittering arms criss-crossed with dust lanes -- but it fails to betray Messier 77's turbulent nature.