If Earth did not tilt at all, but instead orbited exactly upright with respect to our orbit around the sun, there would be minor variations in temperature throughout each year as Earth moved slightly closer to the sun and then slightly farther away. What would Earth be like without aRead More →
The best-supported theory of our universe’s origin centers on an event known as the big bang. … This theory was born of the observation that other galaxies are moving away from our own at great speed in all directions, as if they had all been propelled by an ancient explosiveRead More →
Pulsar. Pulsar is any of a class of cosmic objects that emit extremely regular pulses of radio waves; a few such objects are known to give off short rhythmic bursts of visible light, X rays, and gamma radiation as well. … This radiation is released as intense beams from theRead More →
Nomenclature and history It was designated BD-12°5055, the 5,055th star between 12°S and 13°S counting from 0h right ascension. … In accordance with the international standard for designation of variable stars, it was called UY Scuti, denoting it as the 38th variable star of the constellation Scutum. Why is UYRead More →
The solid metal inner core is the densest layer, the mantle is intermediately dense, and the lithosphere, particularly the continental lithosphere, is the least dense layer. Which type of crust is the densest? Oceanic crust is denser because it generally melts to a higher fraction than continental crust. What areRead More →
Brahma the Creator In the beginning, Brahma sprang from the cosmic golden egg and he then created good & evil and light & dark from his own person. Who created the world? According to Christian belief, God created the universe. There are two stories of how God created it whichRead More →
What will happen to life on earth or human beings on earth? Assuming that human beings, or life, still exists on Earth at that time, they will have survived so much due to the ongoing death of the sun, that the gravitational pertubations due to the galactic collision will beRead More →
Eratosthenes divided 360° by 7.2° and got 50, which told him that the distance between Alexandria and Syene (500 miles) was 1/50 of the total distance around the Earth. So he multiplied 500 by 50 to arrive at his estimate of the Earth’s circumference: 25,000 miles. How did Eratosthenes estimateRead More →
Earth spins because of the way it was formed. Our Solar System formed about 4.6 billion years ago when a huge cloud of gas and dust started to collapse under its own gravity. The Earth keeps on spinning because there are no forces acting to stop it. … Is theRead More →
Yuri Alekseyevich Gagarin (9 March 1934 – 27 March 1968) was a Soviet pilot and cosmonaut who became the first human to journey into outer space, achieving a major milestone in the Space Race; his capsule, Vostok 1, completed one orbit of Earth on 12 April 1961. Was Yuri GagarinRead More →