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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.

November 14th, 2024 12:57:38 EST -0500 Scientists compile library for evaluating exoplanet water
By probing chemical processes observed in the Earth's hot mantle, scientists have started developing a library of basalt-based spectral signatures that not only will help reveal the composition of planets outside of our solar system but could demonstrate evidence of water on those exoplanets.
November 13th, 2024 12:35:42 EST -0500 Gas-churning monster black holes
Scientists using observations from NASA's Neil Gehrels Swift Observatory have discovered, for the first time, the signal from a pair of monster black holes disrupting a cloud of gas in the center of a galaxy.
November 13th, 2024 12:31:27 EST -0500 Three galactic 'red monsters' in the early Universe
Astronomers have identified three ultra-massive galaxies -- nearly as massive as the Milky Way -- already in place within the first billion years after the Big Bang. This surprising discovery was made possible by the James Webb Space Telescope's FRESCO program, which uses the NIRCam/grism spectrograph to measure accurate distances and stellar masses of galaxies. The results indicate that the formation of stars in the early Universe was far more efficient than previously thought, challenging existing galaxy formation models.
November 12th, 2024 19:09:05 EST -0500 A formula for life? New model calculates chances of intelligent beings in our Universe and beyond
The chances of intelligent life emerging in our Universe -- and in any hypothetical ones beyond it -- can be estimated by a new theoretical model which has echoes of the famous Drake Equation. This was the formula that American astronomer Dr Frank Drake came up with in the 1960s to calculate the number of detectable extraterrestrial civilizations in our Milky Way galaxy. More than 60 years on, astrophysicists have produced a different model which instead focuses on the conditions created by the acceleration of the Universe's expansion and the amount of stars formed.
November 12th, 2024 12:30:28 EST -0500 Astronomers' theory of how galaxies formed may be upended
The standard model for how galaxies formed in the early universe predicted that the James Webb Space Telescope (JWST) would see dim signals from small, primitive galaxies. But data are not confirming the popular hypothesis that invisible dark matter helped the earliest stars and galaxies clump together.
November 12th, 2024 12:27:42 EST -0500 New solar composition ratios that could reconcile longstanding questions
A team combined compositional data of primitive bodies like Kuiper Belt objects, asteroids and comets with new solar data sets to develop a revised solar composition that potentially reconciles spectroscopy and helioseismology measurements for the first time. Helioseismology probes the Sun's interior by analyzing the waves that travel through it, while spectroscopy reveals the surface composition based on the spectral signature produced by each chemical element.
November 11th, 2024 15:52:35 EST -0500 Swirling polar vortices likely exist on the Sun
Like the Earth, the Sun likely has swirling polar vortices, according to new research. But unlike on Earth, the formation and evolution of these vortices are driven by magnetic fields.
November 11th, 2024 12:31:36 EST -0500 Einstein's equations collide with the mysteries of the Universe
Why is the expansion of our Universe accelerating? Twenty-five years after its discovery, this phenomenon remains one of the greatest scientific mysteries. Solving it involves testing the fundamental laws of physics, including Albert Einstein's general relativity. Researchers compared Einstein's predictions with data from the Dark Energy Survey. Scientists discovered a slight discrepancy that varies with different periods in cosmic history. These results challenge the validity of Einstein's theories for explaining phenomena beyond our solar system on a universal scale.
November 7th, 2024 16:07:47 EST -0500 Astrophysicists use echoes of light to illuminate black holes
Researchers have developed an innovative technique to search for black hole light echoes. Their novel method, which will make it easier for the mass and the spin of black holes to be measured, represents a major step forward, since it operates independently of many of the other ways in which scientists have probed these parameters in the past.
November 6th, 2024 13:21:19 EST -0500 Asteroid grains shed light on the outer solar system's origins
Tiny grains from asteroid Ryugu are revealing clues to the magnetic forces that shaped the far reaches of the solar system over 4.6 billion years ago. The findings suggest the distal solar system harbored a weak magnetic field, which could have played a role in forming the giant planets and other objects.
November 4th, 2024 11:22:42 EST -0500 Dance of electrons measured in the glow from exploding neutron-stars
The temperature of elementary particles has been observed in the radioactive glow following the collision of two neutron stars and the birth of a black hole. This has, for the first time, made it possible to measure the microscopic, physical properties in these cosmic events. Simultaneously, it reveals how snapshot observations made in an instant represents an object stretched out across time.
November 4th, 2024 11:20:32 EST -0500 Astronomers discover the fastest-feeding black hole in the early universe
Astronomers have discovered a supermassive black hole at the center of a galaxy just 1.5 billion years after the Big Bang that is consuming matter at a phenomenal rate -- over 40 times the theoretical limit. While short lived, this black hole's 'feast' could help astronomers explain how supermassive black holes grew so quickly in the early Universe.
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.