Mysteries of the Universe: 5 unsolved cosmic enigmas
Mysteries of the Universe: 5 unsolved cosmic enigmas H ave you ever wondered if an invisible planet hides at the edge of our solar system or if black holes can ricochet through space like intergalactic billiard balls? Could our galaxy’s black hole have "woken up" with a dramatic bang millions of years ago — and might it do so again? While these questions might not have driven our ancient ancestors to stargaze, modern astronomers are delving into these cosmic conundrums as they explore the universe’s farthest reaches. Here are five of the most enigmatic objects scientists have encountered, along with the leading theories about their nature. 5 cosmic enigmas that baffle scientists The elusive planet nine: Is it real? Deep within our solar so, far beyond Neptune’s orbit, scientists suspect the presence of a massive, unseen planet known as Planet Nine. This theoretical world, estimated to be 5 to 10 times the mass of Earth, may be influencing the orbits of distant icy objects. ...