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Interstellar Objects

All articles tagged with #interstellar objects

Ancient Interstellar Visitor 3I/Atlas May Be the Solar System’s Oldest Object
space18 days ago

Ancient Interstellar Visitor 3I/Atlas May Be the Solar System’s Oldest Object

Astronomers say the interstellar comet 3I/Atlas could be as old as 12 billion years, potentially the oldest object observed in our solar system. Isotopic data from the JWST and ALMA show an unusually high deuterium content and formation in an extremely cold environment, suggesting an origin outside the solar system; NASA says there’s no evidence of extraterrestrial technology. Future observations with the Rubin Observatory are expected to reveal more interstellar visitors.

via The Guardian|
#astronomy#comets#interstellar-objects
Rubin Observatory Poised to Rewrite the Sky with Giant Asteroids, Interstellar Visitors, and Exploding Stars
science1 month ago

Rubin Observatory Poised to Rewrite the Sky with Giant Asteroids, Interstellar Visitors, and Exploding Stars

The Vera C. Rubin Observatory in Chile launches a decade-long all-sky survey that will produce the largest time-lapse of the night sky, generating millions of alerts each night as it uncovers giant asteroids (including ultra-fast rotators), tracks countless supernovas to help probe dark energy and the Hubble tension, and hunts for interstellar visitors, all while creating a vast data flood that scientists will need to manage and interpret.

via Quanta Magazine|
#asteroids#big-data-astronomy#interstellar-objects
JUICE Captures 120 Images of Interstellar Comet 3I/Atlas as It Recedes
space-and-spaceflight4 months ago

JUICE Captures 120 Images of Interstellar Comet 3I/Atlas as It Recedes

ESA’s JUICE mission photographed interstellar comet 3I/Atlas in more than 120 JANUS images on November 6, 2025, a week after its closest approach to the Sun. The shots show a bright coma and a long tail, and scientists are analyzing the data (with results expected in late March). 3I/Atlas, discovered June 2025 by ATLAS, is only the third known interstellar visitor, and as it drifts away from the Sun, JUICE continues its deep-space observations on its way to Jupiter (arrival in 2031).

via Gizmodo|
#comets#esa#interstellar-objects
Inner Planet Transits Across the Sun's Face
science6 months ago

Inner Planet Transits Across the Sun's Face

The article discusses the potential for observing Earth's atmospheric signatures during planetary transits, the possibility of interstellar objects like 3I/ATLAS acting as technological probes, and the significance of upcoming transits and interstellar object detections for understanding extraterrestrial life and technology. It highlights how transits could reveal biological and industrial signatures, and considers the implications of interstellar visitors aligned with Earth's ecliptic plane.

via Avi Loeb – Medium|
#3iatlas#exoplanet-atmospheres#interstellar-objects
Exploring the Cosmos with 3I/ATLAS
science6 months ago

Exploring the Cosmos with 3I/ATLAS

The article discusses the potential of interstellar objects like 3I/ATLAS as faster carriers of human-made messages and artifacts into interstellar space, comparing them to the Voyager spacecraft, and explores the possibilities of detecting extraterrestrial technological imprints on such objects, emphasizing their significance for interstellar archaeology and future space missions.

via Avi Loeb – Medium|
#3iatlas#extraterrestrial-communication#interstellar-archaeology
New Insights into Comet 3I/ATLAS and Its Galactic Mysteries
science8 months ago

New Insights into Comet 3I/ATLAS and Its Galactic Mysteries

Avi Loeb discusses the scientific mysteries of interstellar object 3I/ATLAS, its complex jet structures, the potential for artificial origin, the increasing population of interstellar visitors, and the importance of curiosity and open-mindedness in scientific progress, highlighting recent discoveries and the need for broader international engagement in space science.

via Avi Loeb – Medium|
#3iatlas#astrobiology#interstellar-objects
Are Interstellar Objects a Threat to Earth?
science8 months ago

Are Interstellar Objects a Threat to Earth?

Recent research models the distribution and impact risk of interstellar objects (ISOs) on Earth, suggesting they are more likely to come from the solar apex and galactic plane, with impacts more probable at low latitudes near the equator. The study focuses on ISOs ejected from M-dwarf systems and highlights the importance of upcoming observations from the Vera Rubin Observatory to better understand ISO impact risks.

via Universe Today|
#earth-impact-risk#interstellar-objects#iso-distribution
Interstellar Comet 3I/ATLAS Nears Perihelion with Surprising Activity and Earth-Defense Potential
science8 months ago

Interstellar Comet 3I/ATLAS Nears Perihelion with Surprising Activity and Earth-Defense Potential

Interstellar comet 3I/ATLAS is passing perihelion and has been observed by amateur astronomers and space agencies, showing typical comet features like a coma and dust tail. Despite hype and speculation, it appears to be a normal comet from beyond our solar system, with ongoing observations expected to continue into November and December. The discovery highlights our improving ability to detect interstellar objects, with future telescopes likely to find more such visitors.

via Universe Today|
#3iatlas#comet-activity#interstellar-comet