A Hubble Telescope close-up of the Andromeda Galaxy
What appears to the naked eye as a smudge of light is actually a massive galaxy containing approximately one trillion stars.
🌑🌠 First an eclipse, then a shower of shooting stars. The night sky delivered a truly spectacular celestial show, combining two breathtaking phenomena in one unforgettable moment.
#eclipse#shootingstars#astronomy#nightSky
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Albert Einstein in response to not knowing the speed of sound. ✍️
"I do not carry such information in my mind since it is readily available in books. ...The value of a college education is not the learning of many facts but the training of the mind to think."
Black Hole Thermodynamics ✍️
Black hole thermodynamics reveals that black holes behave like thermodynamic systems, with properties such as temperature and entropy. According to quantum mechanics, black holes emit thermal radiation-known as Hawking radiation-due to quantum fluctuations near the event horizon. This radiation causes black holes to lose mass and slowly evaporate over time.
The temperature of this radiation is inversely proportional to the black hole's mass, meaning smaller black holes emit more intensely. Ultimately, this suggests that black holes are not completely black, but can slowly vanish, raising deep questions about information loss and quantum gravity.