SciencefromBig Think2 weeks agoHow far back in time can the naked eye see?Observing distant astronomical objects means seeing them as they were in the past, from milliseconds to billions of years ago.
SciencefromBig Think2 months agoThe "most distant explosion ever" turned out to be rocket debrisA transiting Earth-orbiting satellite, rather than an extragalactic explosion, caused the ultraviolet flash observed from GN-z11.