BILLIONS of years ago, there may have been two suns in our solar system. If so, that could explain how the solar system caught its outermost objects, including the hypothetical Planet Nine.
Our solar system is far bigger than just the space occupied by the eight official planets: it extends out to the Oort cloud, a belt of icy objects that sits about 2000 to 100,000 times as far from the sun as Earth does, and is only loosely gravitationally bound to the sun.
While you're here, how about this:
Solar System is Traveling through Cloud of Supernova Debris: Study | Astronomy | Sci-News.com
The Solar System moves through the Local Interstellar Cloud. Image credit: NASA / Adler / University of Chicago / Wesleyan.
Radioactive elements synthesized in massive stars are ejected into space via stellar winds and supernova explosions.
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Australian National University's Dr. Anton Wallner and colleagues previously found traces of iron-60 at about 2.6 million years ago, and possibly another at around 6 million years ago, suggesting our planet had traveled through fallout clouds from nearby supernovae.
Planet Nine a BLACK HOLE on the edge of solar system?
For decades, scientists have theorised there is a ninth planet – what would have been 10th were it not for the downgrade of Pluto to a dwarf planet – in Earth’s neighbourhood. The planet was believed to be 10 times bigger than Earth and 20 times farther out from the sun than Neptune – the outer-most planet in the solar system – making it difficult for astronomers to spot.
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While the mysterious body’s existence has yet to be officially proven, researchers strongly suspect that there is something massive lurking in space on the edge of our solar system.
A weird cousin of our solar system is caught on camera | Science News for Students
For the first time, astronomers have captured a portrait of a distant family of planets and their sunlike star. The scientists used the Very Large Telescope in Chile to snap the photo. It shows two giant exoplanets orbiting a young star. Called TYC 8998-760-1, that star has about the same mass as our sun. It sits about 300 light-years from Earth.
Both of its visible planets are unlike anything seen in our solar system. The inner one has some 14 times the mass of Jupiter and is 160 times farther from its star than Earth is from our sun. The outer planet weighs six times Jupiter's mass. It orbits at twice its sibling's distance. At just 17 million years old, this planetary family is a youngster compared to our 4-billion-year-old solar system.
While you're here, how about this:
Robot astromoner finds 50 new planets in our solar system - Esquire Middle East
The robot astrologer was developed at the University of Warwick. It used old NASA data to identify the planets via the appearance of light.
Finding new planets is not easy. Essentially, it involves space scientists looking for breaks in light (essentially, flashes) of a planet's surface. But keeping an eye on all of space isn't exactly productive.
However, NASA's robot astronomer makes it far easier, as it uses AI to monitor light sources before flagging any potential planets to specialists. And it is now far better at figuring out what is a planet, and what is an error.
ODA explores the solar system | East County | Your Observer
The Out-of-Door Academy installed 705 solar panels on its Uihlein campus in Lakewood Ranch, and it’s not stopping there.
The 705 solar panels on the Fox Field House, arts center and new middle school building were the first phase in continuing the school’s sustainability efforts. The school started installing the panels in June and completed the installation this month.
“We have a green mindset in terms of everything we do and extensive recycling protocols and initiatives,” said David Mahler, ODA’s head of school. “We do everything possible to reduce our carbon footprint and minimize waste to try to teach kids and the community the benefits of being thoughtful about consumption.”
NASA's Eyes on the Solar System: See Where Perseverance Is Now - Thrillist
So, how far has it gone in the few weeks since launch? NASA's glad you asked. The Agency's Eyes on the Solar System app will let you follow in real-time as the rover races toward the solar system's fourth planet. The interactive visualization allows you to move around the solar system and see far more than Perseverance (labeled as Mars 2020) and other spacecraft traversing parts unseen.
"Eyes on the Solar System visualizes the same trajectory data that the navigation team uses to plot Perseverance's course to Mars," Fernando Abilleira, the Mars 2020 mission design and navigation manager at NASA's Jet Propulsion Laboratory, said. "If you want to follow along with us on our journey, that's the place to be."
Are you an expert on the solar system?
Which planet has a "Great Red Storm" which has been visible from Earth for decades - and how much of the total mass of the solar system is found in the sun?
Fancy yourself an expert in our solar system? Test your knowledge with our cosmic 15-question quiz on everything from Mars to the asteroid belt.
Can't get enough trivia action? Check out our dedicated Yahoo Quizzes page for more brainteasers!
Happening on Twitter
This tiny saturnian moon may be, pound for pound, the most valuable piece of real estate in the solar system. https://t.co/bVg4zz7CxZ AstronomyMag (from Our tiny corner of the cosmos) Wed Aug 26 07:00:27 +0000 2020
Every 75 years, skygazers on a hypothetical rocky planet in this solar system would see a giant planet appear 15 ti… https://t.co/QkxBKyGLp5 AstronomyMag (from Our tiny corner of the cosmos) Tue Aug 25 16:00:54 +0000 2020
A search for life beyond Earth is a search for liquid water💧 #OceanWorlds may be common in our galaxy and could re… https://t.co/kctUnN1aLu NASAExoplanets (from Beyond) Fri Aug 21 20:06:54 +0000 2020
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