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Space: ideas and frameworks explained

A collection of ideas, frameworks and techniques related to Space, explained clearly so they are easy to understand and share.

Looking back in time as we look to the stars: A visual explanation of how light from the Moon, Sun, stars, and galaxies shows us the past because light takes time to travel.Looking Back in Time: The Speed of Light and the Night SkyOrbit illustration: how a satellite stays in orbit - the balance between its velocity and gravity pulling it towards EarthOrbitWhat is redshift diagram: Astronomer watching the light of one star moving away being redshifted and one star moving towards being blueshiftedRedshiftRussell's Teapot illustration: an unexceptional china teapot floats peacefully in space with part of a large burnt-red planet visible in the background. Bertrand Russell's quote fills the space: "If I were to claim "there's a teapot, too small to spot, orbiting between Earth and Mars", the burden of proof lies on me."Russell's TeapotWhat is The Overview Effect example explained: the classic moonrise photo from the Apollo 11 moon missions with 2 astronauts have a bit of a moment and need to sit down when taking in the majestic view of Earth from the moon and realise this is all we've got.The Overview Effect A Profound Shift in PerspectiveAsteroids, meteors and meteoritesHow to find south using the Southern Cross and The Pointers in the Southern hemisphere using the stars and the night skyUse the Southern Cross to find South (Southern Hemisphere)How to find the North Star in the northern hemisphere and find north using the stars and the night skyHow to Find the North Star to Find North (Northern Hemisphere)Supermoon illustration: showing the moon large at its perigee, when it is closet to Earth, and smaller at it's apogee, when it's furthest from EarthSupermoon

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