The solar system’s asteroid belt is getting nearer to the asteroid belt that formed when the solar nebula formed, with a further bump in the way just weeks away.
Asteroid Belt Watch website, which tracks asteroids, said on Wednesday that a total of 6.5% of all asteroids are now in the belt, and that this figure has not changed in the last three years.
According to NASA, the total number of asteroids in the asteroid field is now estimated at more than 30,000,000.
The belt was formed when a massive star exploded and left behind an asteroid field that now covers the outer edges of our solar system, but there are still several smaller asteroids that are in the same orbit as the largest stars, including one in the outer solar system known as Triton.
However, scientists say there are many more asteroids in that belt than have been identified, because the asteroids are small and are therefore harder to find.
“There are some asteroids that we haven’t been able to see yet that are around 10 times the mass of our Sun, and they’re a hundred times more common,” said Dr. Thomas J. Fisch, of the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts.
A number of different types of asteroids are in orbit around our Sun.
These include the comets, asteroids that orbit the planets, and smaller asteroids known as dwarf asteroids.
“It’s a really difficult question to answer,” said J. Robert Oppenheimer, director of the SETI Institute in Mountain View, California.
“There are a number of things we don’t know, such as how much water there is in the Asteroid Belt.
We know that it’s a vast area, and we know there’s lots of water in it.”
Another reason astronomers are unsure is that it is a really hard problem to understand.
“The best we can do is say it’s probably between 10% and 20% of the mass,” said Fisch.
“It’s really a matter of doing a lot of modeling and testing and comparing results.”
The new estimate for the total amount of water on the surface of the asteroid is around 2% of that number, which means that about 1,000 years ago, the Asteroids Belt was much larger than it is now.
“If you assume that you have to go back to about 1.5 billion years to get the amount of surface water in that area, it would take about 400,000 to 1 million years for the Earth to be covered in water,” said Paul Hertz, a planetary scientist at the Johns Hopkins University Applied Physics Laboratory.
“In the case of the Asterids, we’re talking about a few billion years.”
What are the big questions?
Some experts have suggested that a much larger asteroid is more likely to be on the way.
“I think that it will be a matter for decades to come,” said John C. Reilly, a space physicist at the Massachusetts Institute of Technology in Cambridge.
“We’ll be in trouble in the next hundred years.
If you don’t have any technology, if you don, for example, put in a camera that can take images, and you get some water, you can use that to fill up the hole that’s being created in the solar atmosphere,” Reilly told the BBC.
The current estimate of the total mass of the Earth is around 4.7% of its total mass, meaning that the amount that we know of the planet’s surface is just a fraction of the volume of the solar orbit.