The Kármán Line: Where space begins - Astronomy Magazine
Nov 27, 2023 · Earth ends and outer space starts at the Kármán line, some 62 miles (100 kilometers) above the planet’s surface.
What's the altitude of a typical artificial satellite, and how can I ...
Jun 1, 2006 · Well-known objects in LEO include the Hubble Space Telescope (altitude 380 miles [610 km]) and the International Space Station, which orbits 245 miles (400 km) up.
How vast is the universe? Unimaginably enormous
Sep 26, 2023 · In the words of the popular writer Douglas Adams, author of A Hitchhiker’s Guide to the Galaxy, “Space is big. You just won’t believe how vastly, hugely, mind-bogglingly big it is.
All about the Polaris Dawn mission launching soon
Aug 28, 2024 · The Polaris Program attracted media attention in late 2022 when NASA and SpaceX signed an unfunded Space Act Agreement to explore a Dragon mission to boost Hubble into a higher …
How high-altitude balloons help unlock the cosmos
Mar 7, 2023 · With balloons, astronomers have been able to easily access several regions of the electromagnetic spectrum, offering insights into the high-energy and infrared universe.
How do astronauts sleep in space? - Astronomy Magazine
Jun 16, 2022 · On the International Space Station (ISS), an astronaut sleeps in quarters roughly the size of a phone booth. They cocoon themselves in a sleeping bag tethered to a wall.
Megaroc: The British manned space program that almost was
Apr 3, 2025 · The V-2 could, without a doubt, fly high enough to enter space (currently defined as an altitude above about 62 miles [100 km], also known as the Kármán line).
Is there a hottest temperature possible in the universe?
Jul 18, 2024 · Just before a massive star explodes as a supernova, some theoretical models predict its core can reach temperatures above 100 billion kelvins in the process of imploding, as it approaches …
Is there any sound in space? An astronomer explains
Jan 17, 2024 · Space is a vacuum, lacking the matter to carry sound waves. While a near-perfect vacuum, some sounds can be detected from extremely low-density matter in deep space.
How immense is the universe? | Astronomy.com
Aug 2, 2019 · Using a scaled model (1 Astronomical Unit = 1 centimeter), the article illustrates the vastness of the solar system, with the Oort Cloud extending up to 1000 meters, thereby highlighting …