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
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://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
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
Grand Challenges: Unlocking the Mysteries of the Universe
STEM, STEAM, STEMX, STEMD and beyond..
ERC Grand Challenges: For project design, for inquiry, for activism.