Search results for Planetary Systems

Astronomy May 9, 2026

Scientists trace latest interstellar comet's home to a cold, isolated corner of the Milky Way

The comet that rambled past us from another star last year likely originated in a cold, isolated corner of the galaxy that had yet to gel into its own solar system, astronomers reported Thursday.

Astronomy May 5, 2026

JWST pins down the origins of a planetary odd couple

Across the Milky Way galaxy, a planetary odd couple is circling a star some 190 light years from Earth. A normally "lonely" hot Jupiter is sharing space with a mini-Neptune, in a rare and unlikely pairing that's had astronomers ...

Environment Apr 30, 2026

Report links biodiversity collapse to risks for financial systems and food security

A new report from Anglia Ruskin University (ARU) and the Institute and Faculty of Actuaries (IFoA) warns that biodiversity loss, alongside climate shocks and geopolitical conflict, is disrupting our food system, risking catastrophic ...

Astronomy Apr 23, 2026

3I/ATLAS contains 30 times more semi-heavy water than comets in our solar system

New observations of the interstellar comet 3I/ATLAS include the first measurement of the abundance of deuterated water relative to ordinary water in an interstellar object. Astronomers using the Atacama Large Millimeter/submillimeter ...

Planetary Sciences Apr 16, 2026

Methane emerges from interstellar comet 3I/ATLAS as it exits the solar system

Interstellar comet 3I/ATLAS is now on its way out of our solar system, never to return. The comet was only the third-ever detected object to originate from outside our solar system. Traveling at high speeds, it looped around ...

Astronomy Apr 15, 2026

Astronomers reveal always-changing multi-planet system

Astronomers at The University of New Mexico have published new research confirming three bodies orbiting the dynamic exoplanet system TOI-201. They include a super-Earth (TOI-201 d), a warm Jupiter (TOI-201 b), and a brown ...

Astronomy Apr 1, 2026

Cosmic collision of galaxies mapped by Maunakea telescope

An astronomer at the University of Hawaiʻi at Hilo is using data from the Canada–France–Hawaiʻi Telescope (CFHT) on Maunakea to help reconstruct a slow-motion cosmic collision, one that has been unfolding for hundreds of ...

Planetary Sciences Mar 30, 2026

Earth formed from material exclusively from the inner solar system, planetary scientists show

Planetary scientists have long debated where the material that formed Earth comes from. Despite its location in the inner solar system, they consider it likely that 6–40% of this material must have come from the outer solar ...

Planetary Sciences Mar 24, 2026

A solar system in the making? Two planets spotted forming in disk around young star

Astronomers have observed two planets forming in the disk around a young star named WISPIT 2. Having previously detected one planet, the team has now employed European Southern Observatory (ESO) telescopes to confirm the ...

Astronomy Mar 15, 2026

CHEOPS discovery defies planetary formation rules

We're starting to see just how exceptional our own solar system and its history is, as more exoplanets are discovered. A fourth exoplanet discovery in the LHS 1903 system made by ESA's CHEOPS mission places a rocky world ...

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