Topic: Galaxies & Cosmology
Massive Object Detected Via Gravitational Puppetry

Massive Object Detected Via Gravitational Puppetry

A screenshot from a visualization of the orbit of the Gaia BH3 system as a whole through the Milky Way. Credit: ESA/Gaia/DPAC- CC BY-SA 3.0 IGO. Acknowledgments: Stefan Jordan with Gaia Sky. The universe we see doesn’t always reflect the universe that is out there. Luckily for us, a lot of dark details can’t stay hidden for long because their motion gives them away.  The Gaia spacecraft was launched in 2013 on a mission to measure the precise locations of every point and smudge of light visible to the craft's weird rectangular mirrors. With the ability to see motions across the sky that are...

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JWST Echoes the Hubble Tension

JWST Echoes the Hubble Tension

Comparison of Hubble and Webb views of a Cepheid variable star. Credit: NASA, ESA, CSA, STScI, A. Riess (JHU/STScI) Understanding our universe isn’t a straightforward process. For every theory that appears to be beautifully proven out by data, there is another theory...

Gaia Watches the Universe Form

Gaia Watches the Universe Form

Credit: ESA/Gaia/DPAC; Lucy Reading-Ikkanda/Simons Foundation; K. Storey-Fisher et al. 2024 In trying to understand our universe, theorists can build models that describe how the universe formed as a mostly, but not completely, smooth distribution of matter and energy...

Galactic Death may not be Permanent

Galactic Death may not be Permanent

False-colour JWST image of a small fraction of the GOODS South field, with JADES-GS-z7-01-QU highlighted. Credit: JADES Collaboration In a paper in Nature, with Tobias Looser as the first author, researchers discuss a galaxy cataloged as JADES-GS-z7-01-QU. This...

Galaxies are Born Bright

Galaxies are Born Bright

This image from Webb’s NIRCam (Near-Infrared Camera) instrument shows a portion of the GOODS-North field of galaxies. At the lower right, a pullout highlights the galaxy GN-z11, which is seen at a time just 430 million years after the Big Bang. One prominent...

Black Holes Formed Before Stars

Black Holes Formed Before Stars

An illustration of a magnetic field generated by a supermassive black hole in the early universe, showing turbulent plasma outflows that help turn nearby gas clouds into stars. New findings suggest this process might be responsible for accelerated star formation in...

Unexpected Galaxy Photobombs Cluster

Unexpected Galaxy Photobombs Cluster

A color-composite image of PEARLSDG made with JWST NIRCAM data. Individual stars are visible as small points of light in the image. Its somewhat dull color and lack of many bright stars is consistent with its old age and lack of ongoing star formation. Credit: Image...