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Gaia20ehk

All articles tagged with #gaia20ehk

Glimpse of a planetary crash 11,000 light-years away reshapes planet-formation ideas
science28 days ago

Glimpse of a planetary crash 11,000 light-years away reshapes planet-formation ideas

Astronomers reexamining archival data of the star Gaia20ehk, about 11,000 light-years away, detected dips in brightness caused by debris from a collision between two planets. Infrared light spikes indicated hot dust from the crash, a rare event that may resemble the collision that formed Earth and the Moon and offer new insights into how planetary systems assemble elsewhere in the galaxy.

Cosmic Crash: Distant Star Reveals Planets Colliding in Real Time
space29 days ago

Cosmic Crash: Distant Star Reveals Planets Colliding in Real Time

Astronomers watching the Sun-like star Gaia20ehk (about 11,000 light-years away) saw dips in visible light that coincided with infrared brightening, suggesting hot debris from a collision between two planets. The team attributes the phenomenon to a catastrophic planetary collision producing debris and heat, a rare event detected thanks to decades of data and potentially observable by the Rubin Observatory in its upcoming survey.

Planetary collision near Gaia20ehk may mirror Earth's Moon formation
science29 days ago

Planetary collision near Gaia20ehk may mirror Earth's Moon formation

Astronomers have captured signs of a catastrophic collision between two planets orbiting Gaia20ehk, a sunlike star roughly 11,000 light-years away; the event, inferred from dips in visible light and a surge in infrared emission, suggests a planet-on-planet smash and may mirror the giant impact that formed Earth’s Moon, providing a rare look at planet formation and hinting Rubin Observatory could find more such events in the next decade.

Cosmic planet smash around Gaia20ehk hints at exomoon birth
astronomy29 days ago

Cosmic planet smash around Gaia20ehk hints at exomoon birth

Astronomers found evidence that two planets orbiting Gaia20ehk collided, creating a debris cloud that caused unusual dips in the star’s light since 2016. Infrared observations show heat in the debris, consistent with a violent planetary smash. The event, likened to Earth’s Moon-forming impact, could eventually lead to an exomoon and offers new insights into planet formation; findings were published in The Astrophysical Journal Letters.

Distant Sun-Like Star Hints at Planet Collision
space1 month ago

Distant Sun-Like Star Hints at Planet Collision

Astronomers analyzing Gaia20ehk, a sun-like star about 11,000 light-years away, observed erratic dimming in visible light with a simultaneous infrared brightening, consistent with a violent collision between two planets that produced hot dust and debris; the event may resemble the Earth–Moon formation, and Rubin Observatory surveys could reveal many more such collisions to illuminate planetary system evolution.