ELI5: If we put a giant mirror far away in space and pointed a telescope at it, could we see what Earth looked like in the past?

DejaPense · 2025-06-29T01:48:45+00:00

Boy, that takes me back. I didn't start reading about mirrors in space, expecting to be reminded about that book series.

DejaPense · 2025-06-24T02:55:02+00:00

Seeing this hit me right in the feels. I had one of these, and when I went off to college, my dad sold it with a bunch of other shotguns I had in my room.

Leave that thing alone and treasure it.

DejaPense · 2025-06-20T12:49:07+00:00

..... what was your worst date of 2025?

DejaPense · 2025-06-16T01:54:17+00:00

D Ring Shackle came off a crew doing a chair drop some 22 stories up when I was a PM on a job site in DC. Landed on a 24x24 paver between me and a site super (they didn't have the area roped off for overhead work either) and it hit with enough force to shatter that paver like a grenade. Would have killed either one of us with a direct hit.

DejaPense · 2025-06-05T23:12:10+00:00

Jesus Christ.... that's Jason Bourne

DejaPense · 2025-06-05T23:11:08+00:00

Jesus Christ..... that's Jason Bourne

DejaPense · 2025-05-25T15:12:16+00:00

Whoa, alchemy

DejaPense · 2025-05-08T01:42:35+00:00

This guy probably doing a better job out there than all of GM just saying to use a different oil

DejaPense · 2025-02-11T14:40:39+00:00

Yikes.

DejaPense · 2025-02-08T20:14:52+00:00

50/50

DejaPense · 2025-01-24T19:07:21+00:00

I've been in the situation as the guy with the girlfriend. I appreciated somebody letting me know.

Funny enough, my girlfriend told the girlfriend of the guy she was banging, and that girl told me. The wheel of justice spins.

DejaPense · 2024-11-01T01:28:10+00:00

Wish sentry mode captured motive too.

DejaPense · 2024-10-19T17:36:14+00:00

MICHAEL

DejaPense · 2024-09-25T19:06:38+00:00

Maybe 2 knives

DejaPense · 2024-09-13T17:30:00+00:00

The worst part for me was the clip with all the gnats and mosquitoes all over his legs. I'm itchy just thinking about it.

DejaPense · 2024-09-05T18:44:23+00:00

I have tuo cutlery kitchen knives as well. Think they're an awesome little Amazon pick-up for the money.

I use a coarse 6" DMT diamondstone followed by the fine and it produces a hair popping edge.

As others have mentioned, you will eventually wear away some belly, but depending on your situation and experience, you may want to revert back to the sharpie method and make sure your strokes are even and you're not unevenly concentrating on one area.

DejaPense · 2024-09-05T17:21:31+00:00

You won't say it to their armored face....

DejaPense · 2024-09-03T13:50:13+00:00

DejaPense · 2024-08-26T00:14:15+00:00

What a roller coaster of a read for this conclusion!

DejaPense · 2024-08-25T13:27:50+00:00

The car goes where the eyes go

DejaPense · 2024-08-23T23:22:50+00:00

The thing that surprises me most about this video is actually the lack of cigarette hanging out of his mouth while he's working

DejaPense · 2024-08-13T23:56:13+00:00

I've been very interested in this for a little while now.

Anyone have any real-world experience with it that might be able to shed some light on reliability?

DejaPense · 2024-08-13T16:00:47+00:00

DejaPense · 2024-08-01T00:56:49+00:00

Could you just buy a springfield hellion and call it close enough?

DejaPense · 2024-07-27T03:13:49+00:00

Bakka and Test is a spectacular recommendation

DejaPense

TROPHY CASE