Tag

Atmospheric Entry

All articles tagged with #atmospheric entry

Namibia’s Hoba Meteorite: A 60-Ton Iron Rock That Didn’t Leave a Crater
space-and-astronomy1 month ago

Namibia’s Hoba Meteorite: A 60-Ton Iron Rock That Didn’t Leave a Crater

Namibia’s Hoba meteorite, about 60–66 tons and the largest intact iron meteorite on Earth, remains in place thanks to a rare combination of factors: a nickel-rich, slab-like ataxite shape, a shallow entry angle, and atmospheric braking that slowed it enough to avoid a large impact crater. Over tens of thousands of years it was buried and eroded, with some pieces taken as souvenirs before it was protected as a national monument. The episode illustrates that an object's size alone doesn’t dictate crater size; composition, shape, fragmentation, and entry trajectory are crucial for planetary defense insights.

Physicists Explore What Happens When You Throw a Paper Plane From Space
science1 year ago

Physicists Explore What Happens When You Throw a Paper Plane From Space

Researchers from the University of Tokyo simulated throwing a paper plane from the International Space Station to study its descent through Earth's atmosphere, revealing insights into aerodynamics, atmospheric density measurement, and sustainable space debris disposal, while highlighting the playful curiosity driving scientific exploration.

Exploring the Enigmatic Atmospheres of Ice Giants
space-exploration2 years ago

Exploring the Enigmatic Atmospheres of Ice Giants

The European Space Agency (ESA) has simulated the atmospheres of Uranus and Neptune to understand what a spacecraft would experience upon entering their atmospheres. Uranus and Neptune, although primarily composed of hydrogen and helium like Jupiter and Saturn, have higher methane concentrations. The ESA aims to adapt current testing facilities to reproduce the atmospheric conditions and velocities involved in order to design a high-performance thermal protection system for a future mission. The experiments revealed that even small amounts of methane change the radiation spectrum during atmospheric entry.