Our Solar System features just one star, the Sun, and a host of (relatively) small planets. But it was almost not the case, and Jupiter got right on the edge of becoming the Sun's smaller sibling.
Jupiter, the biggest planet in the Solar System, is by far the largest. If you added up the masses of all the other planets, it wouldn't even come to half of the mass of Jupiter.
You could eliminate every single planet in the Solar System except Jupiter, and you would basically still have... the Solar System.
Many things are taking place:
NASA's Webb Will Study the 'Building Blocks' of Our Solar System | NASA
A large moon might be hugging an object in the outer solar system | New Scientist
An object on the outer edges of the solar system may have a large moon orbiting it at an unusually close distance. The find could help explain how such binary objects evolved.
José-Luis Ortiz at the Institute of Astrophysics of Andalusia in Spain and his colleagues observed the previously discovered object, known as 2002 TC302, in January 2018 when it eclipsed a distant star, casting a shadow on Earth and allowing its properties to be studied.
Explore Exoplanets at Home with NASA – Exoplanet Exploration: Planets Beyond our Solar System
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When we talk about the enormity of the cosmos, it’s easy to toss out big numbers — but far more difficult to wrap our minds around just how large, how far and how numerous celestial bodies really are. (And what does a light-year, the distance light travels in one year, or about 5.8 trillion miles, look like anyway?) To get a better sense of the true distances to exoplanets, we might start with the theater in which we find them, the Milky Way galaxy.
And here's another article:
Belectric Builds Solar System for Netherlands' 1st Green Hybrid Project - Saur Energy
German solar power specialist Belectric undergoes construction of a solar power system for Vattenfall's first complete hybrid power plant called Haringvliet Zuid energy park.
This park will consist of a wind farm of 22 MW of capacity, a battery storage system of 12 MW of capacity and a large-scale photovoltaic (PV) system constructed and commissioned by the company.
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The company said that it has already begun construction on the large-scale photovoltaic (PV) system. It is also planning to assume the operation and maintenance (O&M) of the solar power system for an initial period of 2 years.
Could theorized Planet 9 be a primordial black hole? Researchers propose method to find out
If Planet Nine exists, it's a bit odd that we haven't found it. Several sky surveys are sensitive enough to see a planet of its size. It's possible that the planet is more distant than we expect, or has a lower albedo, but observations are starting to rule some of these out. There is, however a much more radical idea. What if Planet Nine hasn't been observed because it isn't a planet? What if it is a primordial black hole?
Primordial black holes are hypothetical objects formed during the early moments of the big bang. If they exist, they would have the mass of a planet rather than a star. If Planet Nine is a primordial black hole, then it would be about the size of an apple. This would make it far too small and dark to find with our current telescopes. However, since it would still pull on nearby objects gravitationally, there might be other ways to find it.
To safely explore the solar system and beyond, spaceships need to go faster – nuclear-powered
Iain Boyd receives funding from the following sources, none of it is related to space propulsion: Office of Naval Research Lockheed-Martin Northrop-Grumman L3-Harris
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With dreams of Mars on the minds of both NASA and Elon Musk , long-distance crewed missions through space are coming. But you might be surprised to learn that modern rockets don't go all that much faster than the rockets of the past.
There are a lot of reasons that a faster spaceship is a better one, and nuclear-powered rockets are a way to do this. They offer many benefits over traditional fuel-burning rockets or modern solar-powered electric rockets, but there have been only eight U.S. space launches carrying nuclear reactors in the last 40 years.
A Moon May Have Been Discovered in the Outer Solar System | khou.com
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