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  1. , our first interstellar visitor, comes from outside our solar system.

  2. So it looks like we have ANOTHER interstellar visitor screaming through the solar system! It’s an alien comet, and unlike we’ll have plenty of time to observe it.

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  3. 14 Sep 2019

    Oct 22, 2018: & make close approach to each other at 8.5 AU Jan 21, 2029: They equidistant from the Sun at 68 AU. From Borisov's point of view, in the last 2 years it was visited by an interstellar object and a solar system.

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  4. “Considering an artificial origin, one possibility is that ‘Oumuamua’ is a lightsail, floating in interstellar space as a debris from an advanced technological equipment.”

  5. 12 Sep 2019

    Our 2 interstellar guests, &

  6. 6 Apr 2019

    JI Katz of Washington University: "It is unlikely that has a non-gravitational acceleration as large as previously reported", then the artificial hypotesis for that object has not evidences... Image: Artistic recreation of Oumuamua by ESO.

  7. 10 Feb 2019

    Meet ‘, the first observed interstellar visitor to our solar system A mysterious cigar-shaped object spotted tumbling through our solar system last year may have been an alien spacecraft sent to investigate Earth

  8. 12 Feb 2019

    Here’s a *natural* scenario for , a new paper by Amaya Moro-Martín: “Could 1I/'Oumuamua be an icy fractal aggregate ejected from a protoplanetary disk? A fluffy radiation-pressure-driven scenario”

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  9. The first pics of C/2019 Q4 (Borisov) are coming in, and it's already looking pretty different from - PAO

  10. 11 Sep 2019

    Move over ! A 2nd interstellar object is cruising through our solar system: C/2019 Q4 ()! Looks like it'll pass close to ! Can Mars orbiters get a shot of it? Map: JPL Small-Body Db Browser.

  11. This is a mind-blowing breakdown of analyses of / theories surrounding ... so exciting, if onllllllllly it could be "proven"

  12. An unexpected messenger appears deep within an asteroid field. Oumuamua was last seen passing through the Sol system 10-2017. The wonders it must have seen.

  13. 17 Oct 2019

    Hubble telescope captures the best photo yet of the interstellar comet as it hurtles through the Milky Way at 110,000 miles per hour. It is the second after to pass through our system.

  14. Oumuamua part 2: Astronomers have likely discovered a second interstellar object, called Borisov.

  15. Is it a comet? Is it an asteroid? Is it an alien probe? The interstellar object 'Oumuamua has sparked debate in the astronomy community, but the question remains - what exactly is it?

  16. Seriously? The mysterious object may have been an alien spacecraft sent to investigate Earth, Harvard astronomers have suggested.

  17. 16 Sep 2019

    How can we tie together our understanding of ISOs like and with disks+exoplanet statistics? If 'Oumuamua came from a DSHARP-like disk (below), we should be seeing a lot more ISOs in the coming years -- read all about it in my new Letter:

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  18. 23 Jan 2019

    My article on just got published! Sometimes a cigar-shaped interstellar object is just...well, not aliens.

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