21-02-2023, 04:04 PM
Rob Waugh
Mon, 20 February 2023 at 11:57 pm SGT
......
There is a lot of evidence for the planet – thought to be up to 20 times further out from the Sun than Neptune – but it may be impossible to see with current technology.
......
Webb, of Swinburne University in Australia, said: "There's a good reason astronomers spend many hundreds of hours trying to locate a ninth planet, aka Planet Nine or Planet X. And that's because the solar system as we know it doesn't really make sense without it.
“It's through our understanding of gravitational pull that we get our biggest clue for a possible Planet Nine.
"When we look at really distant objects, such as dwarf planets beyond Pluto, we find their orbits are a little unexpected. They move on very large elliptical (oval-shaped) orbits, are grouped together, and exist on an incline compared to the rest of the solar system.
"When astronomers use a computer to model what gravitational forces are needed for these objects to move like this, they find that a planet at least 10 times the mass of Earth would have been required to cause this."
https://sg.news.yahoo.com/hidden-planet-...42722.html
Mon, 20 February 2023 at 11:57 pm SGT
......
There is a lot of evidence for the planet – thought to be up to 20 times further out from the Sun than Neptune – but it may be impossible to see with current technology.
......
Webb, of Swinburne University in Australia, said: "There's a good reason astronomers spend many hundreds of hours trying to locate a ninth planet, aka Planet Nine or Planet X. And that's because the solar system as we know it doesn't really make sense without it.
“It's through our understanding of gravitational pull that we get our biggest clue for a possible Planet Nine.
"When we look at really distant objects, such as dwarf planets beyond Pluto, we find their orbits are a little unexpected. They move on very large elliptical (oval-shaped) orbits, are grouped together, and exist on an incline compared to the rest of the solar system.
"When astronomers use a computer to model what gravitational forces are needed for these objects to move like this, they find that a planet at least 10 times the mass of Earth would have been required to cause this."
https://sg.news.yahoo.com/hidden-planet-...42722.html