The universe extends far beyond our own galaxy, The Milky Way, which is why scientists can only estimate how many stars are in space. THERE ARE MORE STARS IN THE UNIVERSE THAN GRAINS OF SANDS ON EARTH Fine dust makes the blue near the Sun's part of the sky much more visibilke, while normal daylight makes the Red Planet's familiar rusty dust color the most perceptible to the human eye.Ĩ. Just as colors are made more dramatic in sunsets on Earth, sunsets on Mars, according to NASA, would appear bluish to human observers watching from the red planet.
There are about three trillion trees on Planet Earth, and between 100-400 billion stars, approximately, in the galaxy. THERE ARE MORE TREES ON EARTH THAN STARS IN THE MILKY WAY But can you visualise that number of Earths?Ħ. The Sun is large enough that approximately 1.3 million Earths could fit inside (if squashed in) or if the Earths retained their spherical shape then 960,000 would fit. ONE MILLION EARTHS CAN FIT INSIDE THE SUN If the Sun had a voice would it be high and squeaky from all that helium?ĥ. Did you know that the Sun is made up of mostly hydrogen (three quarters worth) with the rest of its mass attributed to helium. The Sun accounts for 99.86% of the mass in our solar system with a mass of around 330,000 times that of Earth. If these were priced by today's pricing, they would cost an estimated 150 million dollars!Ĥ. THE SUN’S MASS TAKES UP 99.86% OF THE SOLAR SYSTEM. However, the space suits that NASA uses were built in 1974. While the entire suit costs a cool $12m, 70% of that cost is for the backpack and control module.
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You would think that Mercury would then be the hottest, but Mercury has no atmosphere (which regulates temperature), resulting in big fluctuations.ģ. A FULL NASA SPACE SUIT COSTS $12,000,000. Did you know that Venus isn't the closest planet to the sun? That is Mercury. Venus is the hottest planet in the solar system and has an average surface temperature of around 450° C. There is no atmosphere in space, which means that sound has no medium or way to travel to be heard.Ģ. THE HOTTEST PLANET IN OUR SOLAR SYSTEM IS 450° C. There are, however, some really cool things we know about space right now! We've compiled a list of what we think are ten stellar facts that we hope you'll think are out of this world! With billions of galaxies and stars, and planets in our own solar system yet to be fully explored or understood, scientists' knowledge of space is always evolving. There is so much about space, our solar system, and the galaxy that we still don't know! Space is vast.
They can be dangerous to humans, particularly if they're surprised or if a person gets between a mother bear and her cubs.10 Crazy Facts You Didn't Know About Space Bears also eat other animals, from rodents to moose.ĭespite their enormous size, brown bears are extremely fast, having been clocked at speeds of 30 miles per hour. Brown bear cubs nurse on their mother's milk until spring and stay with her for some two and a half years-so females only reproduce once every three years.Īdult brown bears are powerful, top-of-the-food chain predators, but much of their diet consists of nuts, berries, fruit, leaves, and roots. Females, or she-bears, den while pregnant and give birth during this winter rest, usually to a pair of cubs. In fall a brown bear may eat as much as 90 pounds of food each day, and it may weigh twice as much before hibernation as it will in spring.īrown bears dig dens for winter hibernation, often holing up in a suitable hillside. In this season dozens of bears may gather to feast on the fish, craving fats that will sustain them through the long winter ahead. Dramatic gatherings can be seen at prime Alaskan fishing spots when the salmon swim upstream for summer spawning. These omnivorous giants tend to be solitary animals, except for females and their cubs, but at times they do congregate. The world's largest brown bears are found in coastal British Columbia and Alaska, and on islands such as Kodiak. It is the most widely distributed bear in the world. The awe-inspiring brown bear lives in the forests and mountains of northern North America, Europe, and Asia.
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