As far as humans can tell, space is infinite; it has no end or borders. Scientists believe that space will always seem infinite to humans for two reasons. First, our investigation of space has never found an edge (or any indications of an edge). Second, measurements show that space is expanding fast
Rather than being composed of anything, outer space is loosely defined as the void between the planets, stars and other objects in the universe. While not a perfect vacuum, scientists consider outer space to be a hard vacuum, with a pressure level close to zero. Nevertheless, space is not completely
Space-time is a mathematical and physical construct that explains how space and time interact; the three physical dimensions and one time dimension combine to create the four-dimensional nature of the universe. Space-time resulted from Albert Einstein's work on relativity.
The first person to travel to space was the Russian, Yuri Gagarin in 1961. Gagarin orbited Earth one time before re-entering the atmosphere and successfully returning to land. The entire trip took 108 minutes.
Writing an article involves selecting an idea for an article, researching the topic, creating an outline, doing the writing and reviewing it. The steps apply to news articles, feature stories, how-to pieces and editorials.
Some articles about cells include "Latest in Heart Stem Cell Debate" from The Scientist and "A Multitool for Cells" from Phys.org. Both of these websites contain many more articles about cell biology and recent discoveries about cellular function, easily found through the Related sections on both ar
Feature articles look at news stories in-depth rather than delivering breaking news. One example is a human interest story that discusses someone's experiences.
Alan B. Shepherd became the first American in space on May 5, 1961. He made a sub-orbital flight lasting 15 minutes aboard the Freedom 7 and reached an altitude of 116 miles in space.
A number of positive space initiatives in universities and colleges work to create receptive, welcoming environments for bisexual, gender variant, intersex, gay, lesbian, questioning, transgender, transsexual and two-spirit communities and individuals. The University of British Columbia and George B
There is no air in space because there is no gravity to condense the molecules of gases found there into air. On Earth, gravity holds nitrogen, oxygen and the other gases that compose the atmosphere together, but only to about 60 miles above the surface.