Recent comments in /f/space

space-ModTeam t1_j6etr55 wrote

Reply to Hypothetical question about centrifugal force? by morphikk

Hello u/morphikk, your submission "Hypothetical question about centrifugal force?" has been removed from r/space because:

  • Such questions should be asked in the "All space questions" thread stickied at the top of the sub.

Please read the rules in the sidebar and check r/space for duplicate submissions before posting. If you have any questions about this removal please message the r/space moderators. Thank you.

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HIMP_Dahak_172291 t1_j6erdci wrote

Reply to comment by UHF1211 in Asteroids sudden flyby shows blind spot in planetary threat detection by coinfanking

Close nuclear detonations would still push the asteroid simply by differential heating and vaporizing the rock on the facing side. Not much of a push, but it is one. Nukes might be the only recourse for rubble asteroids too. You'd have to have the warhead on a robot that would push itself inside before detonating for it to do any good, but I can't think of a better option.

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Aeromarine_eng OP t1_j6ek8v7 wrote

Reply to comment by BlazeObsidian in A tiny, mov­ing point of light. Copies of the Photographs use for the discovery of Pluto. Credit: Lowell Observatory. January 1930 by Aeromarine_eng

A blink comparator was used.

> The photographic plates Tombaugh was comparing with this machine were 36 x 43 centimeters (14 x 17 inches), and were long exposures taken with a telescopic camera that sported a powerful 33-centimeter (13-inch) diameter lens.

https://airandspace.si.edu/stories/editorial/finding-pluto-blink-comparator

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