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Possible origins of dark matter in 'Dark Big Bang' scenario

Science Daily - Mon, 11/18/2024 - 12:53pm
Recent research unlocks new clues that could radically change the world's understanding of the origin of dark matter.

What is the cause of this unusual parabolic structure?

APOD - Mon, 11/18/2024 - 9:07am

What is the cause of this unusual parabolic structure? What is the cause of this unusual parabolic structure?


Pluto at Night

APOD - Sun, 11/17/2024 - 9:07am

The night side of Pluto spans The night side of Pluto spans


Apollo 12 and Surveyor 3

APOD - Sat, 11/16/2024 - 9:07am

Put on your Put on your


IC 348 and Barnard 3

APOD - Fri, 11/15/2024 - 9:07am

IC 348 and Barnard 3 IC 348 and Barnard 3


Scientists compile library for evaluating exoplanet water

Science Daily - Thu, 11/14/2024 - 12:57pm
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.

Barred Spiral Galaxy NGC 1365 from Webb

APOD - Thu, 11/14/2024 - 9:07am

Barred Spiral Galaxy NGC 1365 from Webb Barred Spiral Galaxy NGC 1365 from Webb


Gas-churning monster black holes

Science Daily - Wed, 11/13/2024 - 12:35pm
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.

Three galactic 'red monsters' in the early Universe

Science Daily - Wed, 11/13/2024 - 12:31pm
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.

How was the Crescent Nebula created?

APOD - Wed, 11/13/2024 - 9:07am

How was the Crescent Nebula created? How was the Crescent Nebula created?


A formula for life? New model calculates chances of intelligent beings in our Universe and beyond

Science Daily - Tue, 11/12/2024 - 7:09pm
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.

Astronomers' theory of how galaxies formed may be upended

Science Daily - Tue, 11/12/2024 - 12:30pm
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.

New solar composition ratios that could reconcile longstanding questions

Science Daily - Tue, 11/12/2024 - 12:27pm
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.

What created an unusual dark streak in Comet Tsuchinshan-Atlas's tail?

APOD - Tue, 11/12/2024 - 9:07am

What created an unusual dark streak in Comet Tsuchinshan-Atlas's tail? What created an unusual dark streak in Comet Tsuchinshan-Atlas's tail?


Swirling polar vortices likely exist on the Sun

Science Daily - Mon, 11/11/2024 - 3:52pm
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.

Einstein's equations collide with the mysteries of the Universe

Science Daily - Mon, 11/11/2024 - 12:31pm
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.

The largest canyon in the

APOD - Mon, 11/11/2024 - 9:07am

The largest canyon in the The largest canyon in the


Neptune at Night

APOD - Sun, 11/10/2024 - 9:07am

Neptune at Night Neptune at Night


Helping Hand in Cassiopeia

APOD - Sat, 11/09/2024 - 9:07am

Helping Hand in Cassiopeia Helping Hand in Cassiopeia


Shell Galaxies in Pisces

APOD - Fri, 11/08/2024 - 9:07am

Shell Galaxies in Pisces Shell Galaxies in Pisces


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