Even most rocket scientists would rather avoid hard math when they don't have to do it. So when it comes to figuring out orbits in complex three-body systems, like those in cis-lunar space, which is between Earth and the ...
Space Exploration
Dec 29, 2025
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79
There are about 15,000 satellites orbiting Earth. Most of them, like the International Space Station and the Hubble Telescope, reside in low Earth orbit, or LEO, which tops out at about 1,200 miles (2,000 kilometers) above ...
Space Exploration
Dec 16, 2025
0
65
A "House of Cards" is a wonderful English phrase that it seems is now primarily associated with a Netflix political drama. However, its original meaning is of a system that is fundamentally unstable. It's also the term Sarah ...
Space Exploration
Dec 15, 2025
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The number 40,000 might not sound particularly dramatic, but it represents humanity's growing catalog of near-Earth asteroids, rocky remnants from the solar system's violent birth that cross paths with our planet's orbit. ...
Astronomy
Nov 25, 2025
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59
To see Earth from space is to be forever changed by the view. Since Alan Shepard became the first American to lay eyes on our home planet from above, countless NASA astronauts have described feeling awed by the astonishing ...
Space Exploration
Nov 24, 2025
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30
A research team from the Nanjing Institute of Geology and Paleontology of the Chinese Academy of Sciences (NIGPAS), along with collaborators, has found that long-term orbital variations occurring over million-year timescales ...
Earth Sciences
Oct 28, 2025
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41
Scientists have begun to unravel the origin story of a cataclysmic collision between two black holes, which seem to have met their fate on a rarely observed "squashed" orbital path.
Astronomy
Oct 8, 2025
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68
Beyond the race for scientific, commercial and military purposes, there is another space race of a more curious sort. A race to be the first to send various objects up there. But why?
Space Exploration
Oct 2, 2025
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37
An international team led by the University of Geneva (UNIGE), including scientists from the National Center of Competence in Research PlanetS, the University of Warwick, and the Canary Islands Institute of Astrophysics, ...
Planetary Sciences
Sep 16, 2025
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62
Everyone who has ever lived on Earth has been well-aware of the moon, but it turns out Earth also has some frequent temporary companions. These "quasi-moons" are small asteroids that enter into a kind of resonance with Earth's ...
