00:01On this day in space.
00:04On April 27th, 1961, NASA launched Explorer 11, a satellite that contained the first gamma-ray telescope to go to space.
00:12This marked the birth of space-based gamma-ray astronomy.
00:15Gamma-rays are a form of electromagnetic radiation and have the highest energy of any kind of wave in the electromagnetic spectrum.
00:22These waves come from things like supernova explosions, supermassive black holes, and even solar flares.
00:27Before Explorer 11 launched to look for gamma rays in space, scientists were pretty sure that gamma rays were out there.
00:34However, they had no way of detecting these gamma rays because they get absorbed in Earth's atmosphere.
00:39Explorer 11 discovered 22 cosmic gamma rays during its seven-month mission.
00:44These rays were coming from all over the place and didn't seem to point to any particular sources out in space.
00:50This observation became the first evidence of a uniform gamma ray background in the universe.
00:54And that's what happened on this day in space.
00:57And that's what happened on this day in space.
00:58Oh boy.
00:59That's what happened on this day in space.
01:01No but have it.
01:02Let us see what what happened on the planet every day in space.
01:03One of the cameras was clearly in the opposite directions.
01:04The big ones that yarn screenshots to do this right now in space.
01:06The carbon orange touchscreen.
01:07The time learning forular is also ногída.
01:08What happened on the planet every day in space as one or the mainравствуйте,
01:09and that will spread it within the gemeinsam between switched향 journaling.
01:11Thebaren hurry on theham and his two matters.
01:12The rest of a knowether saw...
01:14Is that what happened on this day talks that it seemed to go to space with as light this magnetic field.
01:18Why?
01:19The client has purchased white people or more like Luan,
01:22dynamics such as well as Chinese members as well.
01:23The texture is to call herindet.
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