Nothing would happen to the Earth if a comet passed through it, except that we would be bear witness to a breath-taking space fireworks display. The meteoritic dust found in the comet’s tail would be burned up by the air’s friction in the atmosphere, just as meteors are consumed and transformed into … Read more
Before we take a look at the aspects of the Grandfather Paradox, let us first discuss how humans will be able to travel through time in the future. According to the extended version of Albert Einstein’s Theory of Relativity, a human will be able to go back to the past if he … Read more
Now and then, brave astronauts pierce the boundary of our planet to visit outer space. Just like what we see in movies, there is no gravity or weight in space. There is zero force of attraction between objects. Therefore, once a spaceship is out of the reach of the earth’s gravity, it … Read more
Have you ever asked why galaxies do not collide? Why do planets not bump with each other though they are always moving? Why are raindrops from above and not from below? Why can we walk on Earth, but astronauts float on the moon? I know you haven’t asked these questions because you … Read more
Quiet surrounding with crickets’ sound and the rustle of leaves as the cold breeze blow. Looking up in a night sky with the full Moon’s perfect scene adds to the relaxing feeling and beauty that most of us loved to see. Among all celestial bodies, Moon is the easiest to be seen … Read more
The human body, which has evolved under the condition of gravity, cannot endure prolonged weightlessness without adverse effects, the most serious one of which is depletion of calcium from the bones. For example, all the astronauts of one of the missions of NASA’s space laboratory named Skylab had lost 7% calcium through … Read more
Researchers say that the Sun emits more energy in one second than any person who has emitted it in his or her whole life! The inherent source of solar output is a complicated process called fusion. In the core of the Sun, millions of nuclear reactions take place, and those reactions then … Read more
It has been over 50 years since humans first visited the Moon on July 20, 1969, and provided us with valuable information about the Earth’s natural satellite. Around 600 million people watched this fantastic feat live on television. On the American astronauts’ return, people were exhilarated to see what they brought back … Read more