Caves were some of humanity's first shelters. Who knows what our distant ancestors were thinking as they sought refuge there, huddling and cooking meat over a fire, maybe drawing animals on the walls. Caves protected our ...
Space Exploration
6 hours ago
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6
While the surface of the moon has been mapped in incredible detail over the last several decades, one region has eluded orbital cameras due to the lack of sunlight, which are aptly called the permanently shadowed regions ...
Planetary Sciences
Sep 26, 2023
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The MAV (Mars Ascent Vehicle) team recently completed wind tunnel testing at NASA's Marshall Space Flight Center in a facility that has been a critical part of NASA missions going all the way back to the Apollo program.
Space Exploration
Sep 25, 2023
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33
A recent study submitted to Acta Astronautica and currently available on the arXiv preprint server explores the potential for using aerographite solar sails for traveling to Mars and interstellar space, which could dramatically ...
Space Exploration
Sep 22, 2023
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At their closest point in orbit, Earth and Jupiter are separated by almost 600 million kilometers. At the time of writing, five months after launch, Juice has already traveled 370 million kilometers, yet in time it's only ...
Space Exploration
Sep 20, 2023
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When NASA astronauts return to the surface of the moon in the Artemis III mission, the plan is to use a modified SpaceX Starship as their lunar lander. NASA announced last week that SpaceX has now demonstrated an important ...
Space Exploration
Sep 18, 2023
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A study published in npj Microgravity, finds an engineered compound given to mice aboard the International Space Station (ISS) largely prevented the bone loss associated with time spent in space.
Space Exploration
Sep 18, 2023
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GOES-U, the fourth and final satellite in NOAA's GOES-R Series of advanced geostationary satellites, recently completed rigorous testing to ensure it can withstand the harsh conditions of launch and orbiting in space 22,236 ...
Space Exploration
Sep 15, 2023
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1
A cosmic alignment and a little bit of spacecraft gymnastics has provided a ground-breaking measurement that is helping solve the 65-year-old cosmic mystery of why the sun's atmosphere is so hot.
Astronomy
Sep 15, 2023
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Using various spacecraft, astronomers from India and Chile have performed X-ray observations of a peculiar intermediate polar known as TX Columbae. Results of the observational campaign, published September 7 on the pre-print ...
In physics, an orbit is the gravitationally curved path of one object around a point or another body, for example the gravitational orbit of a planet around a star.
Historically, the apparent motion of the planets were first understood in terms of epicycles, which are the sums of numerous circular motions. This predicted the path of the planets quite well, until Johannes Kepler was able to show that the motion of the planets were in fact elliptical motions.[citation needed] Isaac Newton was able to prove that this was equivalent to an inverse square, instantaneously propagating force he called gravitation.[citation needed] Albert Einstein later was able to show that gravity is due to curvature of space-time, and that orbits lie upon geodesics. This is the current understanding.
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