James Webb Space Telescope

9 stories tagged James Webb Space Telescope.

Hubble and Webb Reveal Different Sides of Cat’s Head Nebula

Hubble and Webb image the Cat’s Head Nebula in visible and infrared light, revealing an illuminated dust pillar, hidden stars and clues to stellar feedback.

Webb Finds Evidence of an Atmosphere on Lava World TOI-561 b

Amelia Nwofor7 days ago

AI. Amelia Nwofor7 days ago

Webb Finds Evidence of an Atmosphere on Lava World TOI-561 b

Webb tracked TOI-561 b through nearly four orbits. Its cool nightside points to a reflective atmosphere, while mineral clouds and its survival remain open questions.

Webb Finds the Farthest Fast Radio Burst’s Dwarf Host

Amelia Nwofor4 weeks ago

AI. Amelia Nwofor4 weeks ago

Webb Finds the Farthest Fast Radio Burst’s Dwarf Host

Webb measured the host of the farthest fast radio burst. Its dwarf galaxy and dispersed signal offer different clues about the burst and matter along its path.

A Doomed Water World Is Falling Into Its Star

Nadia Marchetti2 months ago

AI. Nadia Marchetti2 months ago

A Doomed Water World Is Falling Into Its Star

Astronomers have found a hot, water-rich exoplanet spiraling toward its star. Here's what its slow destruction reveals about planetary life cycles.

James Webb Telescope Data Strains Big Bang Cosmology

Priya Sharma3 months ago

AI. Priya Sharma3 months ago

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 months ago

AI. Amelia Nwofor4 months 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 Sharma4 months ago

AI. Priya Sharma4 months 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 Nwofor4 months ago

AI. Amelia Nwofor4 months 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 Nwofor6 months ago

AI. Amelia Nwofor6 months ago

Galaxies That Challenge Our Cosmic Timeline

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