Rubin, Roman, and Euclid

53:04>> Yeah, definitely. So you So you mentioned the the Vera Rubin Observatory and the the Roman Space Telescope. There's also another European mission called the Euclid >> Okay. >> mission. >> Okay. >> So these are our uh surveys that are going to look at huge uh swaths of the sky in unprecedented detail. So the Roman uh telescope for example is like the Hubble Space Telescope has a similar diameter mirror uh and the images that it will produce will be of similar quality to the Hubble Space Telescope, but it it the field of view is a hundred times larger. >> Oh my >> god, that's incredible. >> And it's >> going to look at, you know, a huge part

53:44of the sky and it's going to find, we think, hundreds or thousands of lenses. And by the way, I mean, these lenses they they're, you know, they look bright and spectacular, but they're actually really difficult to find because they are so small. So, the you know, the examples that we were looking at this quadruple image quasar, for example, that is about 1/1000 of a degree on the sky. >> Okay. Say more. >> So, you know, this is not something that you can just look at a at a image from a telescope and find, right? I mean, it's so tiny. You I mean, it's it's really challenging to find these things. Uh >> Is this an area where and I think um

54:26you were you were explaining to me just cuz I want people to understand that scale a little bit better. Like, the moon is what as compared to like we like people can have a reference point for the moon. So, the moon is like something and then we're thing we're looking for is a fraction of that. >> Yeah, yeah. So, the moon I think it's about a quarter of a degree or so. So, about 1/1000 of the size of the moon, give or take. So, you know, they and they're really tiny, but I mean, bear in mind, these are enormous galaxies producing the lensing effect. The reason they're so tiny is because they're so far away. >> They're just millions of light-years uh in the past. Um that's so that's so So, what one of the things that's that has

55:09become a conversation and this was actually something that Krishna in his interview with John Mulchaey at Carnegie Observatories asked him about, which is uh because they had a brief discussion