Force of gravity on Moon
Your weight on the moon is a function of the moon s gravity. First, we know that gravity is a force that attracts all physical objects towards each other (but why this happens is largely unknown!). Second, the greater the mass of an object, the stronger the force of gravity. The moon is 1/4 the size…
Big Bang new theory
This is an artist s concept of the metric expansion of space, where space (including hypothetical non-observable portions of the universe) is represented at each time by the circular sections. Note on the left the dramatic expansion (not to scale) occurring in the inflationary epoch, and at the center…
Isaac Newton theory
The following article is part of an in-depth biography of Sir, the English mathematician and scientist, author of the . It portrays the years after Newton s birth in 1642, his education, as well as his early scientific contributions, before the in Woolsthorpe-by-Colsterworth, a hamlet in the county of…
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Who discovered Dark energy?
Billions of years ago, the universe was crowded with tight-knit clusters of galaxies. Then, a party crasher got the upper hand. This mysterious force now called dark energy has since been expanding the universe at an increasing pace. New measurements of this accelerating expansion, which drives galaxies…
asia328
Natural laws of Science
Natural law noun 1. an ethical belief or system of beliefs supposed to be inherent in human nature and discoverable by reason rather than revelation 2. a nonlogically necessary truth; law of nature See also nomological (sense 2) 3. the philosophical doctrine that the authority of the legal system or…
Aviator
Units of gravitational constant
We use the gravitational constant in this form because in Newtonian physics, it makes the most sense: it is the conversion factor between force (mass times acceleration) and the product of the inverse square law (m_1m_2/r^2) which has units of mass squared divided by length squared. However, in relativistic…
panen123
Dark matter percentage
Scientists have struggled for decades to identify the constituent particles of dark matter, but they’ve had little to show for all their efforts. A new study at Case Western Reserve University is now advancing the radical new hypothesis that dark matter may in fact be made not of exotic subatomic particles…
Forexeze
Anti-Dark matter
From: Damian The short answer is that we re not sure - scientists have not yet discovered what dark matter really is, and so we can t yet be sure if it has an antimatter counterpart. People have done a lot of thinking about this, however. In the most popular theories, the dark matter is composed of…
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