Cesium 137 is produced in nuclear explosions and nuclear reactors. This is a big problem with low half-life isotopes. But it has many practical uses. It is used in radiation therapy. It is dangerous that most compounds of cesium are...
This is a picture of the Arp 78 galaxy taken by the Gemini North telescope on the island of Hawaii. Gemini North telescope dome on the summit of Mauna Kea, Hawaii, USA. This 8-metre optical/infrared telescope was completed in 1999....
NASA's Lucy prepares to launch a Trojan asteroid, a group of asteroids in front of and behind Jupiter. Lucy will be launched from Florida on October 26 on an Atlas V rocket. Lucy will fly in search of extraterrestrial life...
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