Successful launch for eROSITA X-ray telescope

The Russian-German Spektrum-Roentgen-Gamma (SRG) space mission successfully lifted off from the Baikonur cosmodrome on Saturday, July 13 at 14:31. Onboard is the eROSITA X-ray telescope, which was developed and built by a ...

Confirmed: In space no one can hear you scream

The old tagline "in space no one can hear you scream" has been confirmed by a South African mother loudly shouting for her children to tidy their room from 33,000 meters above the ground. Or not so loudly, as the case appears ...

NASA's orbiting Carbon Observatory-3 gets first data

NASA's Orbiting Carbon Observatory-3 (OCO-3), the agency's newest carbon dioxide-measuring mission to launch into space, has seen the light. From its perch on the International Space Station, OCO-3 captured its first glimpses ...

India scrubs Moon mission launch one hour before liftoff

India on Monday postponed the launch of a lunar probe less than an hour before blast-off because of a technical problem, delaying its bid to become only the fourth nation to land a spacecraft on the Moon.

Russia launches space telescope (Update)

Russia launched a space telescope Saturday from the cosmodrome in Baikonur, Kazakhstan, in a joint mission with Germany intended to map X-rays across the sky and replace a project lost in January.

India prepares to land rover on moon in global space race

India is looking to take a giant leap in its space program and solidify its place among the world's spacefaring nations with its second unmanned mission to the moon, this one aimed at landing a rover near the unexplored south ...

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Space is the boundless, three-dimensional extent in which objects and events occur and have relative position and direction. Physical space is often conceived in three linear dimensions, although modern physicists usually consider it, with time, to be part of the boundless four-dimensional continuum known as spacetime. In mathematics spaces with different numbers of dimensions and with different underlying structures can be examined. The concept of space is considered to be of fundamental importance to an understanding of the universe although disagreement continues between philosophers over whether it is itself an entity, a relationship between entities, or part of a conceptual framework.

Many of the philosophical questions arose in the 17th century, during the early development of classical mechanics. In Isaac Newton's view, space was absolute - in the sense that it existed permanently and independently of whether there were any matter in the space. Other natural philosophers, notably Gottfried Leibniz, thought instead that space was a collection of relations between objects, given by their distance and direction from one another. In the 18th century, Immanuel Kant described space and time as elements of a systematic framework which humans use to structure their experience.

In the 19th and 20th centuries mathematicians began to examine non-Euclidean geometries, in which space can be said to be curved, rather than flat. According to Albert Einstein's theory of general relativity, space around gravitational fields deviates from Euclidean space. Experimental tests of general relativity have confirmed that non-Euclidean space provides a better model for explaining the existing laws of mechanics and optics.

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