Category Astronomy/Space

The dying sun could tear the solar system apart sooner than thought

nasa sun
Credit: Unsplash/CC0 Public Domain

The fate of our solar system is written in the stars—well, one star to be precise: the sun. Estimates of what the end will look like once the sun sheds much of its mass and ultimately dies vary widely. New research published in The Astrophysical Journal Letters suggests that the final curtain for some of the outer planets will arrive much sooner than previously thought, shrinking the timeline from a quintillion years down to roughly 1 billion years.

The rock we live on will probably be long gone by then, but Jupiter, Saturn, Uranus and Neptune might not make it either.

Traditional models assumed that the outer solar system would survive for billions of years before a passing star might disturb it...

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Discovery marks the first detection of variable water clouds outside of the solar system

A planet with a striped pattern consisting of purple and tan bands, set against a backdrop of stars in the distant universe
Artist’s concept of a brown dwarf. Brown dwarfs begin their lives like stars but they never accumulate enough mass to fuse atoms steadily at their cores and ignite with starlight.
NASA/JPL-Caltech

A Jupiter-sized world just 7.5 light-years away is cloudy, chemically complex and, it turns out, more like home than anyone expected. Using the James Webb Space Telescope, Brittany Miles, assistant astronomer at the University of Arizona’s Steward Observatory, led a team that spent 11 hours staring at WISE 0855, the coldest known brown dwarf, collecting a spectrum of its light every 15 minutes.

The result is the most detailed time-series portrait ever taken of this frigid world—and the first direct confirmation that water clouds on another body are changing thickness over time, just like we...

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Largest 2D map of the universe helps scientists discover new gravitational lenses

Gravitational lensing infographic
This infographic shows how the gravitational lensing effect works: when a very massive foreground galaxy bends spacetime, acting as a cosmic magnifying glass that enlarges and distorts the image of a more distant galaxy behind it.
Credit: International Gemini Observatory/NOIRLab/NSF/AURA/ALMA (ESO/NAOJ/NRAO)/R. Proctor

Using data from the DESI Legacy Imaging Surveys, with help from artificial intelligence, an international team of scientists has discovered 70 new gravitational lenses—rare cosmic alignments that act as natural magnifying glasses. The new lenses further expand one of the largest collections of confirmed lenses to date and will allow scientists to study dark matter, galaxy evolution and the structure of the universe.

In August 2026, the DESI Legacy Imaging Surveys tea...

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Undergraduate student may have solved puzzle regarding isolated galaxies that have stopped producing stars

Julian Shapiro poses in front of the Richard Treffers Telescope on the rooftop of UC Berkeley’s Campbell Hall.
Photo courtesy of Shannon Kelli

An undergraduate astrophysics student at UC Berkeley has found three unusual galaxies—cataloged as Shapiro Dwarf Galaxies I, II and III. Each galaxy is far from other galaxies and has stopped making stars, a combination that is extremely rare. The discovery, published in The Astrophysical Journal, provides compelling observational evidence of a long-held astronomical theory.

“Dwarf galaxies exist both in isolation and as satellites around larger galaxies like our own Milky Way,” said Julian Shapiro, the study’s sole author, who conducted his research while still in high school...

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