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Bookmark or Share- What's the furthest object observable by the naked eye from earth?In general, the answer given by @Jeremy is completely correct. However, transient phenomena such as supernovae (exploding stars) and the even more energetic gamma-ray bursts can for a brief period be visible to the naked eye, despite distances of billions of lightyears.
- How many stars and galaxies can be seen by the naked eye?In the best sky conditions, the naked eye (with effort) can see objects with an apparent magnitude of 8.0. This reveals about 43,197 objects in the sky. There are 9 galaxies visible to the naked eye that you might see when observing the sky, and there are about 13 nebulae that you might see. Sources: The Bortle Dark-Sky Scale - John E. Bortle
- naked eye - Is the Moon only 60x60 pixels? - Astronomy Stack ExchangeIn fact, the first and last known "map of the moon" drawn purely based on naked-eye observations was drawn by William Gilbert (1540–1603) and included in his posthumously published work De Mundo Nostro Sublunari. It is quite remarkable how little detail his map actually includes, even compared to a tiny 40 by 40 pixel image as shown above:
- Can the Milky Way be seen with the naked eye? Does this apply to any ...There are a few nearby galaxies that can be seen with the naked eye, but clear & dark skies are essential. Most notable for northern-hemisphere viewers is the Andromeda Galaxy also known as M31, best viewed in late summer and fall; from the southern hemisphere the Magellanic Clouds, irregular satellites of our own Galaxy, are famous landmarks.
- Have there been successful attempts at spotting Neptune with the naked eye?As pointed out here, the limit of naked eye visibility for people with extremely good night vision is about magnitude 8.5. Neptune at opposition is much brighter at magnitude 7.7, so it should be visible to people with good eyesight.
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