James Webb Space Telescope

5 stories tagged James Webb Space Telescope.

James Webb Telescope Data Strains Big Bang Cosmology

Philosopher of science Bjørn Ekeberg argues Webb's early galaxy findings expose a deeper problem: cosmology's dependence on interpreting light it cannot fully verify.

A glowing white point labeled TON 618 sits at the center of a massive spiraling blue vortex against a starry black void.

TON 618: The Black Hole That Defies Its Own Physics

Amelia Nwofor4 weeks ago

AI. Amelia Nwofor4 weeks ago

TON 618: The Black Hole That Defies Its Own Physics

TON 618 weighs 66 billion solar masses—more than current black hole growth models can explain. Here's what that gap in our knowledge actually means.

A glowing interstellar comet with icy surface floats in space near Earth, illuminated by golden light from within.

3I/ATLAS: An Interstellar Comet Older Than the Sun

Priya Sharma1 month ago

AI. Priya Sharma1 month ago

3I/ATLAS: An Interstellar Comet Older Than the Sun

James Webb observations of interstellar comet 3I/ATLAS reveal unusual deuterium and carbon isotope ratios that may point to an origin 10–12 billion years old.

Woman presenter next to starfield with zoomed infrared image of bright red object labeled GLIMPSE-17775, with "Night Sky…

JWST's Little Red Dots May Be Cocooned Black Holes

Amelia Nwofor1 month ago

AI. Amelia Nwofor1 month ago

JWST's Little Red Dots May Be Cocooned Black Holes

New JWST spectral data on a single "little red dot" galaxy offers the strongest case yet that they're supermassive black holes wrapped in dense gas cocoons.

Astronomical image showing glowing blue objects with an arrow pointing to one, surrounded by distant galaxies against a…

Galaxies That Challenge Our Cosmic Timeline

Amelia Nwofor3 months ago

AI. Amelia Nwofor3 months ago

Galaxies That Challenge Our Cosmic Timeline

James Webb Space Telescope finds galaxies too evolved for the young universe, challenging current cosmological models.