The 1st sign of intelligent life beyond Earth?

Physicist Avi Loeb of Harvard believes we should take seriously the idea that ‘Oumuamua – the 1st known object to pass through our solar system from interstellar space – might have been created by an alien civilization. His new book is called “Extraterrestrial.” Source: https://earthsky.org/space/book-avi-loeb-extraterrestrial-1st-sign-of-intelligent-life…

Scientists determine ‘Oumuamua isn’t made from molecular hydrogen ice after all

The debate over the origins and molecular structure of ‘Oumuamua continued today with an announcement in The Astrophysical Journal Letters that despite earlier promising claims, the interstellar object is not made of molecular hydrogen ice after all. Source: https://phys.org/news/2020-08-scientists-oumuamua-isnt-molecular-hydrogen.html…

New Exotica Catalog will help guide search for ET

“What if extraterrestrial intelligences are not like us, but are found in the frigid reaches of the outer solar system, the extreme gravity of neutron stars, the brilliant cores of active galaxies, or the hearts of the richest galaxy clusters?” Source: https://earthsky.org/space/the-breakthrough-listen-exotic-target-catalog-seti-extraterrestrial-intelligence…

MIT Professor Proposes Fleet of Pre-Positioned Satellites Ready To Orbit Interstellar Comets

Slashdot reader Iwastheone quotes MIT News:
To closely observe an interstellar object (ISO) hurtling through space, time is of the essence. Richard Linares, an assistant professor in the Department of Aeronautics and Astronautics at MIT, developed a concept for a “dynamic orbital slingshot for rendezvous with interstellar objects.” He outlined his idea in a research proposal that was recently selected as a…

Are these 19 eccentric asteroids from other star systems?

In the first discovery of its kind, researchers in France have found 19 asteroids in our solar system – between the planets Jupiter and Neptune – that they say are likely of interstellar origin. Source: https://earthsky.org/space/19-interstellar-asteroids-in-our-solar-system-centaurs…

Update on 2I/Borisov, the first known interstellar comet

The first known interstellar comet – 21/Borisov – probably came here from a red dwarf star, according to a new study of data from the Hubble Space Telescope. Source: https://earthsky.org/space/comet-21-borisov-comets-red-dwarf-stars-hubble-space-telescope…

Is ‘Oumuamua a fragment of a shattered super-Earth?

Computer simulations confirm that ‘Oumuamua – an object from another star system that sped near our sun in 2017 – likely formed via a close encounter with its star. ‘Oumuamua may have originated in a debris disk, they said, or even a shattered super-Earth. Source: https://earthsky.org/space/new-formation-theory-interstellar-object-oumuamua…

New origin story of ‘Oumuamua interstellar visitor does not involve aliens

The mysterious interstellar object ‘Oumuamua is probably a fragment of a larger body that was torn apart by gravitational forces during a close flyby of its native star, a new study suggests. Source: https://www.livescience.com/interstellar-object-oumuamua-origins-tidal-disruption.html

New formation theory explains the mysterious interstellar object ‘Oumuamua

Since its discovery in 2017, an air of mystery has surrounded the first known interstellar object to visit our solar system, an elongated, cigar-shaped body named ‘Oumuamua (Hawaiian for “a messenger from afar arriving first”). Source: https://phys.org/news/2020-04-formation-theory-mysterious-interstellar-oumuamua.html…