originalucifer@moist.catsweat.com to No Stupid Questions@lemmy.world · 1 month agowhat would happen if a rogue, earth-size planet ran straight into the sun? anything interesting?message-squaremessage-square59fedilinkarrow-up125arrow-down11file-text
arrow-up124arrow-down1message-squarewhat would happen if a rogue, earth-size planet ran straight into the sun? anything interesting?originalucifer@moist.catsweat.com to No Stupid Questions@lemmy.world · 1 month agomessage-square59fedilinkfile-text
minus-squareRegalPotoo@lemmy.worldlinkfedilinkEnglisharrow-up1·1 month agoFor a start, the planet wouldn’t actually collide with the sun on one piece - once the planet crosses the Roche limit it will break apart
minus-squaredeegeese@sopuli.xyzlinkfedilinkarrow-up4·1 month agoSorry, but that’s wrong. Roche limit applies in a circular orbit, tidal effects are irrelevant in a head on collision.
minus-squarewillow@lemmy.blahaj.zonelinkfedilinkEnglisharrow-up1·1 month agoFamous example of a comet breaking up from entering Jupiter’s roche limit in a highly eccentric orbit (not circular). Spaghettification is also an example of how tidal forces still apply during a head on collision.
minus-squaredeegeese@sopuli.xyzlinkfedilinkarrow-up1·1 month agoEccentric orbit is still an orbit with tidal forces. A dead in crash will stretch the sphere, but without angular momentum, it’s just a raindrop.
minus-squareA_A@lemmy.worldlinkfedilinkarrow-up1·1 month agoif it “ran straight”, it wouldn’t have tangential speed, only radial.
For a start, the planet wouldn’t actually collide with the sun on one piece - once the planet crosses the Roche limit it will break apart
Sorry, but that’s wrong.
Roche limit applies in a circular orbit, tidal effects are irrelevant in a head on collision.
Famous example of a comet breaking up from entering Jupiter’s roche limit in a highly eccentric orbit (not circular). Spaghettification is also an example of how tidal forces still apply during a head on collision.
Eccentric orbit is still an orbit with tidal forces.
A dead in crash will stretch the sphere, but without angular momentum, it’s just a raindrop.
if it “ran straight”, it wouldn’t have tangential speed, only radial.