The Black Hole Experiments Quadrilogy (2017)
by V Bertolaccini
A quadrilogy with four mind-blowing action-packed novels!
In The Stargate Black Hole scientists create a mind-blowing gateway ... In The Alien Sphere explorers find a pulsating alien sphere and enter its black hole ... In Space Odyssey: Beyond the Universe a spacecraft encounters a supernatural artifact ... In The Dyson Stargate explorers enter a mind-blowing gateway with trillions of portals ...