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www.reference.com/science/big-space-10a03aa5279e333b

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

www.reference.com/article/space-made-1e1b629314e8cad4

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

www.reference.com/article/space-time-86d539d1028da778

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.

www.reference.com/article/science-kids-808dc74f98002d7e

Science for kids, specifically elementary aged kids, is a general introduction to basic scientific concepts. It is the foundation for further scientific development and experimentation.

www.reference.com/article/social-sciences-important-80d938860cb6ab75

Advocates for the study of social sciences contend that studying the discipline is valuable because it serves as a framework for understanding how the findings of the so-called pure sciences affect society. While the pure sciences address issues such as medicine and energy allocation, social science

www.reference.com/world-view/meaning-science-technology-afc82b0b03a960eb

Science is the methodical process in which humans observe and experiment in different fields of study to gain evidence for a clearer understanding of the world. Humans then use science to apply to technology practices. Technology is used through process and design to improve the quality of our lives

www.reference.com/science/speed-science-30bda874cce72019

In science, speed is defined as the total distance traveled divided by the total time it took to travel that particular distance. Speed is dependent on the amount of time that it takes a person or object to move toward something.

www.reference.com/article/first-person-space-56e031bdbf884fc8

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.

www.reference.com/science/mass-science-8ee15e6437b1646c

In science, mass is the amount of matter an object has. Newton's second law says that mass is the property of matter that determines the force required to impart a given acceleration to an object.

www.reference.com/article/science-matter-called-d1e3fc790b8f9eb9

The science of matter is called chemistry. It is the study of matter, chemical reactions, compositions, structures and properties. Chemistry is a form of natural science.