Nemeski@mander.xyz to Astronomy@mander.xyz · 3 days agoGiant Mirrors in Space Could Bring Sunlight After Dark, One Startup Says—and Astronomers Are Concernedwww.smithsonianmag.comexternal-linkmessage-square31linkfedilinkarrow-up163arrow-down11
arrow-up162arrow-down1external-linkGiant Mirrors in Space Could Bring Sunlight After Dark, One Startup Says—and Astronomers Are Concernedwww.smithsonianmag.comNemeski@mander.xyz to Astronomy@mander.xyz · 3 days agomessage-square31linkfedilink
minus-squarebufalo1973@piefed.sociallinkfedilinkEnglisharrow-up1·edit-22 days agoIf it’s only to heat up the house you don’t need to dig deep. IIRC, less than 5 m if the pipes are horizontal. At least is what WP says
If it’s only to heat up the house you don’t need to dig deep. IIRC, less than 5 m if the pipes are horizontal.
At least is what WP says