Visitors to Our Galaxy?

The Mysteries of Interstellar Visitors


Interstellar visit from a cigar-shaped thing named 'Oumuamua still confounds astronomers

https://www.wired.com/story/oumuamua-was-neither-comet-nor-asteroid-so-what-was-it/


Astronomers spent decades looking for objects from outside our own solar system. Then two arrived at once.

https://www.bbc.com/future/article/20210506-the-interstellar-voyagers-that-visited-our-sun


Harvard’s Avi Loeb Argues That ‘Oumuamua’ Was Really An Interstellar Alien Probe

https://www.forbes.com/sites/brucedorminey/2021/02/11/harvard-astronomer-views-interstellar-interloper-as-humanitys-wake-up-call/?sh=6e11bf8a4a21


Mystery of ‘Oumuamua Gets Trickier

https://www.scientificamerican.com/article/mystery-of-interstellar-visitor-oumuamua-gets-trickier/

https://solarsystem.nasa.gov/asteroids-comets-and-meteors/comets/oumuamua/in-depth/


Why Can’t We Find Planet Nine? Planetary scientists have declared that a ghost planet is hiding in the depths of the solar system, well beyond the orbit of Pluto.

https://www.quantamagazine.org/a-new-worlds-extraordinary-orbit-points-to-planet-nine-20180515/

https://www.quantamagazine.org/why-cant-we-find-planet-nine-20180703/


2I/Borisov, the first known interstellar comet

https://earthsky.org/space/comet-21-borisov-comets-red-dwarf-stars-hubble-space-telescope/


Pluto's Sputnik Planitia glacier contains thousands of pits suspected to be caused by floating islands of water ice

https://www.spaceflightinsider.com/missions/solar-system/eternal-ice-age-unusual-ridges-near-plutos-sputnik-planitia-formed-by-ancient-glaciers/

https://skyandtelescope.org/astronomy-news/sputnik-planitia-drives-plutos-wandering-heart/



The Six Most Likely Places to Find Alien Life

https://www.space.com/15702-alien-life-solar-system-places.html



Fermi Paradox: Where are the aliens?

https://www.space.com/25325-fermi-paradox.html


The many major hurdles to becoming an interplanetary species.

https://en.wikipedia.org/wiki/Great_Filter

https://www.scifuture.org/the-great-filter-a-possible-explanation-for-the-fermi-paradox-interview-with-robin-hanson/


The Great Filter: a possible solution to the Fermi Paradox.

https://astronomy.com/news/2020/11/the-great-filter-a-possible-solution-to-the-fermi-paradox


The Great Filter Theory | Genius by Stephen Hawking

https://mass.pbslearningmedia.org/resource/hawking_genius_ep02_clip05/are-we-alone-ch-5-the-great-filter-theory-genius-by-stephen-hawking/





Grand Challenges: Unlocking the Mysteries of the Universe

STEM, STEAM, STEMX, STEMD and beyond..


ERC Grand Challenges: For project design, for inquiry, for activism.





By Arne Nordmann (norro), CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=365130