Mercury is the smallest planet in the solar system and Jupiter is the largest. The Sun has a diameter of about 1,392,000 km but its mass is only one-millionth that of Earth’s. It weighs around 2 x 10^30 kg or 4 x 10^32 pounds. Thats roughly equivalent to 5 million trillion tons! So if you were standing on the surface of the sun, your weight would be equal to all the matter in the universe combined.
What is bigger than a galaxy?
There are many sizes of Galaxies. The universe is large but some of the universe are smaller than the Milky Way. The universe is made up of billions of galaxies. Some have hundreds of billion stars while others may contain less than 100 stars each. A typical spiral galaxy contains over 200 billion stars. If we could see them from outside our own Galaxy they would appear as pinpoints of light. Our home Galaxy is called the Milky Way because it looks like a milky way when viewed through telescopes.
What’s bigger Pluto or the moon?
The largest moon of the planet is called Charon. The size of Charon is roughly the same as that of Pluto. The four other moons of the dwarfplanet are called Kerberos, Styx, Nix and Hydra. They orbit close to the equator of Pluto. These moons are much larger than those orbiting Uranus, Neptune and Saturn. Their diameters range between 1000km and 3000km. This makes these moons slightly larger than the Moon itself. But the biggest moon of any planet is Titan which orbits Saturn. Its diameter is nearly 4000 kilometers.
What is bigger than a comet?
These are bigger than comets. A small asteroid would be classified as small, while the largest one is 100 times larger. They are bigger than a standard comet and smaller than an asteroid. Asteroids can vary greatly in size depending upon their composition. For example, carbonaceous asteroids tend to be very small whereas stony ones are quite big. There are also metallic asteroids such as Vesta. Most asteroids are rocky with little ice or water content. However, there are exceptions. Meteorites are meteorite fragments found on earth. Many of them originated in outer space.
What is the oldest thing in the universe?
The burst was the most distant known object with a red shift of less than 8.2. The oldest known object in the Universe was GRB 090423. 13 billion years is how long it took for the light from the burst to reach Earth. When this happened, the Universe was just 6% of its current age. In fact, the first star formed at 380 000 years after the Big Bang. At that time, the Universe had expanded by 400%. Since then, the expansion rate has been increasing steadily. By now, the Universe will expand by another 600%, leaving us with a future where everything is so far away that even light cannot travel faster than 186 thousand miles per second.
What is the largest thing in the universe?
This question is hard to answer since no single measurement exists. We do know however that black holes are the heaviest things in the universe. Black Holes are objects whose gravity pulls in anything nearby. Anything not strong enough to resist gets sucked into the hole. Eventually nothing remains except a tiny point of energy. Scientists believe that every massive star collapses under its own gravitational force eventually forming a supermassive black hole. Gravity is stronger near the center of a black hole than anywhere else.
What galaxy do we live in?
The large barred spiral galaxy is called the Milky Way. The stars we see in the sky are all in the same place. The name of the Milky Way comes from the fact that it appears as a band of light in the sky when it’s not visible from the ground. It takes up about half our night sky. Our Sun lies within the galactic disk along with many billions of other suns. About 200 million light-years out from the centre of the Galaxy lie the Large Magellanic Cloud and Small Magellanic Cloud. Both galaxies have similar characteristics to ours but they’re moving apart from each other because of the pull of the Milky Way.
Is Pluto bigger than Russia?
No. But you could fit more people inside Pluto than outside Russia. Pluto is slightly larger than Texas and 3/4th the diameter of the Moon. If you were standing on the surface of Pluto, your head would only touch the horizon. You’d need a ladder taller than Mount Everest to get any higher. And if you stood on top of the tallest mountain on Pluto, you’d still be below sea level!
Why is Pluto so hard?
Pluto is made mostly of rock. This means it doesn’t melt like ice does. Ice floats on liquid water which makes it easy to move around. Rock sinks down through layers of dirt until it reaches solid bedrock. So what keeps Pluto cold? Its atmosphere. Like air pressure pushing against walls, gases push back against the surface of Pluto making it difficult for heat to escape. As a result, temperatures hover between -290 degrees Fahrenheit and +270 F.
How cold does Pluto get?
There is a temperature on the island of Pluto that can be as cold as -400 degrees. The mountains are big blocks of water ice, sometimes covered in frozen gases like methane, and can be as tall as 6,500 to 9,800 feet. They may look white or blue depending on their composition. These icy peaks are constantly being eroded by wind and rain. Water vapor condenses onto them creating clouds. Sometimes these clouds form thick fog banks that block sunlight reaching the surface. On some days, there might be snowfall too. Snow falls slowly over thousands of years. Some scientists think that the glaciers on Pluto are older than those found on earth.
What is the biggest comet?
The largest comet in our solar system is named comet Hyakutake. There are a number of ways to measure a comet. The Hale Bopp comet has a nucleus of more than 60 miles in diameter, which is thought to be the biggest ever encountered. Comet Shoemaker Levy 9 was discovered in 1994 and had a mass estimated at 1 billion tons. That’s almost twice the size of Earth. A typical asteroid measures 10km across while comets range from 100m to several kilometers wide.
How big was the asteroid that killed the dinosaurs?
It wasn’t an asteroid. An impact crater caused most of the extinction event known as the K-T boundary. Scientists believe this happened 65 million years ago. At least one meteorite weighing 50 times more than Mt Erebus hit the planet. Most likely, multiple impacts occurred. One theory suggests that the Chicxulub Crater formed after a massive object struck the Yucatan Peninsula off Mexico. Another idea is that a huge chunk of space debris crashed into the ocean near Antarctica.
What happens if a comet hits earth?
The environmental effects of the impact will result in more damage to the ground when the energy is released more. If water bodies are hit, such effects include shock waves, heat radiation, the formation of craters with associated earthquakes, and the formation of waves in the ocean. In addition, dust particles ejected from the comet’s tail can cause severe weather conditions. Dust storms have been observed during previous encounters with comets. However, no direct evidence exists that proves that they actually occur.