An online science portal which provides latest and regular updates related to space technology and space sciences.
Subscribe to this blog
Follow by Email
Search This Blog
What is a Black Hole? Answers of Few Biggest Questions about BLACK HOLES
What is a Black Hole?
Black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is
so strong because matter has been squeezed into a tiny space. This can happen when a star is dying.
Because no light can get out, people can't see black holes. They are invisible. Space telescopes with
special tools can help find black holes. The special tools can see how stars that are very close to black
holes act differently than other stars.
How Big Are Black Holes?
Black holes can be big or small. Scientists think the smallest black holes are as small as just one atom.
These black holes are very tiny but have the mass of a large mountain. Mass is the amount of matter, or
"stuff," in an object.
Another kind of black hole is called "stellar." Its mass can be up to 20 times more than the mass of the
sun. There may be many, many stellar mass black holes in Earth's galaxy. Earth's galaxy is called the
The largest black holes are called "supermassive." These black holes have masses that are more than 1
million suns together. Scientists have found proof that every large galaxy contains a supermassive black
hole at its center. The supermassive black hole at the center of the Milky Way galaxy is called Sagittarius
A. It has a mass equal to about 4 million suns and would fit inside a very large ball that could hold a few
How Big is The Universe Our brains struggle to comprehend how big the universe is because everything here on Earth, and even the Earth itself, is very small when compared to the immense scale of the universe. BEST UNIVERSE VIDEO While we imagine light to be instantaneous, photons of light actually take time to travel from one side of the room to the other.So let's think about it a different way, using something we see and interact with every day… light. subscribe BEST SPACE PORTAL ON YOUTUBE
In the time it took you to read this far, a photon of light leaving the Sun has travelled about 10 million kilometres –
equivalent to travelling around the Earth 250 times.
Light that leaves our second nearest star, Proxima Centauri, takes just over four years to reach Earth and so we can
define it as four light years away.
As such, if you were to look at Proxima Centauri, you would not be seeing the star as it is right now, but how it 'was' 4
We see all things in the …
NASA’s Juno spacecraft has been hanging around Jupiter for a while now, sending back some of the most jaw-dropping photos that mankind has ever captured, but its latest snapshot might be its most impressive yet. Cruising high above the planet’s massive, swirling cloud tops, Juno shot a photo in December that is really one for the ages.
Like a cauldron of milky liquid, this photo of the mighty Jupiter looks more like a giant painting than a planet. With violent storms raging on its surface, the largest planet in our Solar System is one seriously huge piece of eye candy.
Here is a video in which the images are reconstructed into 3D:
“Jupiter completely fills the image, with only a hint of the terminator (where daylight fades to night) in the upper right corner, and no visible limb (the curved edge of the planet),” NASA explains of the photo. “Juno took this image of colorful, turbulent clouds in Jupiter’s northern hemisphere on Dec. 16, 2017 at 9:43 a.m. PST (12:43 p.m. EST) from 8,292…
Stephen William Hawking, is widely regarded as one of best minds in physics in the 21st century. He shot to fame after his path breaking proof of the “Big Bang Theory” which said that the universe started from a singularity in space and time. Author of the bestselling popular science book “A Brief History of Time”, Hawking has strived to make his work more accessible to the general public. He has also famously survived inspite of having Motor Neuron Disease, even though he was given only 2 years to live when he was diagnosed at a very young age.
Here are a few interesting facts and stories about Professor Hawking that you probably did not know: #1. Hawking was not a bright kid in school.
Even though right now we regard Hawking as one of the greatest minds on this planet, he was not a very bright kid in school. When he was 9 years old, his grades were amongst the worst in class and even later with some effort he could bring them up to only about average. But most of his teachers agree …