Boeing's Starliner set for first crewed mission to ISS
After years of delays, Boeing's Starliner capsule is set to ferry astronauts to the International Space Station (ISS) Monday, a milestone for the US aerospace giant and NASA.
After years of delays, Boeing's Starliner capsule is set to ferry astronauts to the International Space Station (ISS) Monday, a milestone for the US aerospace giant and NASA.
Space Exploration
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Launch day is finally here: Boeing's Starliner capsule blasts off Monday to the International Space Station on its first crewed mission—several years after SpaceX first achieved the same milestone.
Space Exploration
May 4, 2024
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Europe's newest rocket soon launches, taking with it many space missions each with a unique objective, destination and team at home, cheering them on. Whether launching new satellites to look back and study Earth, peer out ...
Space Exploration
May 3, 2024
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The Eta Aquarid meteor shower, remnants of Halley's comet, peaks this weekend. And with just a waning crescent moon in the sky, it should be visible.
Space Exploration
May 3, 2024
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Using the James Webb Space Telescope (JWST), an international team of astronomers has explored young stellar objects (YSOs) in an open cluster known as NGC 346. The study, published April 24 on the preprint server arXiv, ...
Cells are the fundamental units of life, forming the variety of all living things on Earth as individual cells and multicellular organisms. To better understand how cells perform the essential functions of life, scientists ...
Biotechnology
May 3, 2024
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China on Friday launched a lunar probe to land on the far side of the moon and return with samples that could provide insights into differences between the less-explored region and the better-known near side.
Space Exploration
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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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