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Astronomy News

Astronomy News -- ScienceDaily
Astronomy News -- ScienceDaily

Astronomy news. New! Earth-like extrasolar planet found; double helix nebula; supermassive black holes, astronomy articles, astronomy pictures. Updated daily.

April 15th, 2025 18:34:33 EDT -0400 On Jupiter, it's mushballs all the way down
Observations of Jupiter show that ammonia is unevenly distributed in the upper atmosphere, against expectations of uniform mixing. Scientists found evidence for a complicated but apparently real process associated with fierce lightning storms: strong updrafts generate slushy, ice-coated hailstones of ammonia and water that eventually plunge into the planet and deplete areas of ammonia. This is part of the first 3D picture of the planet's atmosphere, which shows storms are primarily shallow.
April 15th, 2025 14:35:16 EDT -0400 Molten Martian core could explain red planet's magnetic quirks
First ever supercomputer simulations of Mars with a fully molten core could explain the Red Planet's unusual magnetic field. Billions of years ago, Mars had an active magnetic field. Mysteriously, its imprint is strongest in the southern hemisphere. Researchers found that Mars could have produced a one-sided magnetic field with a fully molten core, rather than the traditional, Earth-like solid inner core setup.
April 15th, 2025 14:34:10 EDT -0400 Mysterious atmosphere of 'Rosetta Stone' exoplanet
A new study modeled the chemistry of TOI-270 d, an exoplanet between Earth and Neptune in size, finding evidence that it could be a giant rocky planet shrouded in a thick, hot atmosphere. TOI-270 d is only 73 light years from Earth and could serve as a 'Rosetta Stone' for understanding an entire class of new planets.
April 14th, 2025 12:47:13 EDT -0400 Scientists may have solved a puzzling space rock mystery
Researchers may have answered one of space science's long-running questions -- and it could change our understanding of how life began. Carbon-rich asteroids are abundant in space yet make up less than 5 per cent of meteorites found on Earth.
April 11th, 2025 10:59:03 EDT -0400 From boring to bursting: Giant black hole awakens
Astronomers are investigating the longest and most energetic bursts of X-rays seen from a newly awakened black hole. Watching this strange behavior unfold in real time offers a unique opportunity to learn more about these powerful events and the mysterious behavior of massive black holes.
April 10th, 2025 16:10:05 EDT -0400 Our closest neighboring galaxy may be being torn apart
A team has revealed new insights into the motion of massive stars in the Small Magellanic Cloud (SMC), a small galaxy neighboring the Milky Way. Their findings suggest that the gravitational pull of the Large Magellanic Cloud (LMC), the SMC's larger companion, may be tearing the smaller one apart. This discovery reveals a new pattern in the motion of these stars that could transform our understanding of galaxy evolution and interactions.
April 9th, 2025 21:25:31 EDT -0400 'Hidden galaxies': Key to unlocking some of universe's secrets
Astronomers have peered back in time to find what looks like a population of 'hidden' galaxies that could hold the key to unlocking some of the universe's secrets. If their existence is confirmed it would 'effectively break current models of galaxy numbers and evolution'. The possible galaxies may also provide the missing piece of the puzzle for the energy generation in the universe in infrared light. That's because their combined light would be enough to top-up the energy budget of the universe to the maximum we observe, effectively accounting for all remaining energy emission at these long wavelengths.
April 9th, 2025 11:48:46 EDT -0400 Scientists source solar emissions with largest-ever concentration of rare helium isotope
The NASA/ESA Solar Orbiter recently recorded the highest-ever concentration of a rare helium isotope (3He) emitted from the Sun. A Southwest Research Institute-led team of scientists sought the source of this unusual occurrence to better understand the mechanisms that drive solar energetic particles (SEPs) that permeate our solar system. SEPs are high-energy, accelerated particles including protons, electrons and heavy ions associated with solar events like flares and coronal mass ejections.
April 8th, 2025 12:17:03 EDT -0400 Do 'completely dark' dark matter halos exist?
Every galaxy is thought to form at the center of a dark matter halo. Stars are formed when gravity within dark matter halos draws in gas, but astrophysicists don't know whether star-free dark matter halos exist. An Diego astrophysicist has calculated the mass below which halos fail to form.
April 4th, 2025 12:26:24 EDT -0400 Astronomers discover doomed pair of spiralling stars on our cosmic doorstep
Astronomers have discovered an extremely rare, high mass, compact binary star system only ~150 light years away. These two stars are on a collision course to explode as a type 1a supernova, appearing 10 times brighter than the moon.
April 3rd, 2025 12:26:34 EDT -0400 Solar wave squeezed Jupiter's magnetic shield to unleash heat
A solar wind event from 2017 that hit Jupiter and compressed its magnetosphere created a hot region spanning half Jupiter's circumference.
April 3rd, 2025 12:26:28 EDT -0400 Solar cells made of moon dust could power future space exploration
The same dirt that clings to astronauts' boots may one day keep their lights on. Researchers created solar cells made out of simulated Moon dust. The cells convert sunlight into energy efficiently, withstand radiation damage, and mitigate the need for transporting heavy materials into space, offering a potential solution to one of space exploration's biggest challenges: reliable energy sources.
Data Courtesy of Science Daily

Jan 2013 - Two comets to get excited about. One is Comet PANSTARRS, which will be brightest in March 2013. The other is Comet ISON, which might become a daylight comet in late 2013. Although a comet’s movement in our sky can be predicted, its brightness cannot be. It’s too early to know whether Comet PANSTARRS or Comet ISON – the two exciting comets of 2013 – will dazzle or fizzle.

Comet PANSTARRS
By October 2012, its surrounding coma was seen to be large and fine at an estimated 75,000 miles (120,000 kilometers) wide. In March 2013, by some estimates, this comet should get as bright as Venus,

Comet ISON
Last year, Russian astronomers Vitaly Nevsky and Artyom Novichonok discovered a new gigantic comet that is currently approaching Earth. The ISON comet, which is expected to become brighter than the full moon, will be visible to the naked eye by late 2013.

Comet ISON has only been visible through powerful telescopes. In November 2013, heat from the sun will vaporize ices in the comet's body, creating what could be a spectacular tail that will be visible in Earth's night sky without telescopes or even binoculars from about October 2013 through January 2014.

Comet ISON will come within 800,000 miles (1.2 million km) of our sun’s surface on November 28. That’s over 100 times closer to the sun than Earth. This close pass to the sun might cause Comet ISON to break to pieces. January 2014 may see a meteor shower produced by streams of debris from the ISON comet.