The X-Rays and Blackholes

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The paper states that as gas spirals toward a black hole through a formation called an accretion disk, it heats up to roughly 10 million degrees Celsius. The temperature in the main body of the disk is roughly 2,000 times hotter than the sun and emits low-energy or "soft" X-rays. However, observations also detect "hard" X-rays which produce up to 100 times higher energy levels.

You May Soon Be Able to Control Technology With Hand Gestures

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This Google technology uses a sensor to pick up small, accurate hand movements in order to control wearables and other devices. 

These Are Not Raccoons, They're Tanuki

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Despite their masked appearance, raccoon dogs are not closely related to raccoons. Rather, they belong to the Canidae family, alongside wolves and foxes.

The raccoon dog (Nyctereutes procyonoides) is also a basal species, which means it most resembles the ancestral form of the Canidae family. So, if you're wondering what your Fido looked like several million years ago, look no further than the raccoon dog!
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