NASA hears from Voyager 1, the most distant spacecraft from Earth, after months of quiet
NASA has finally heard back from Voyager 1 again in a way that makes sense.
NASA has finally heard back from Voyager 1 again in a way that makes sense.
Planetary Sciences
32 minutes ago
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It's not just another ride for a pair of veteran NASA astronauts who arrived to the Space Coast ahead of their flight onboard Boeing's CST-100 Starliner.
Space Exploration
1 hour ago
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A spaceship carrying three astronauts from China's Shenzhou-18 mission safely docked at Tiangong space station Friday, state-run media reported, the latest step in Beijing's space program that aims to send astronauts to the ...
Space Exploration
Apr 26, 2024
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Riding aboard NASA's Psyche spacecraft, the agency's Deep Space Optical Communications technology demonstration continues to break records. While the asteroid-bound spacecraft doesn't rely on optical communications to send ...
Space Exploration
Apr 25, 2024
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The two NASA astronauts assigned to Boeing's first human spaceflight arrived at their launch site Thursday, just over a week before their scheduled liftoff.
Space Exploration
Apr 25, 2024
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China launched a three-member crew to its orbiting space station on Thursday as part of its ambitious program that aims to put astronauts on the moon by 2030.
Space Exploration
Apr 25, 2024
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Researchers have developed a compact and lightweight single-photon airborne lidar system that can acquire high-resolution 3D images with a low-power laser. This advance could make single-photon lidar practical for air and ...
Optics & Photonics
Apr 25, 2024
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216
New movies of two of the most famous objects in the sky—the Crab Nebula and Cassiopeia A—are being released from NASA's Chandra X-ray Observatory. Each includes X-ray data collected by Chandra over about two decades. ...
Astronomy
Apr 24, 2024
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SpaceX sent up the 30th launch from the Space Coast for the year on the evening of April 23, a mission that also featured the company's 300th successful booster recovery.
Space Exploration
Apr 24, 2024
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An international study, led by researchers from Monash University, has revealed crucial insights into black hole dynamics within massive disks at the centers of galaxies.
Astronomy
Apr 24, 2024
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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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