Since everyone has the impression that it is the Sun that revolves around the Earth, men use it to calculate the hours and measure the time that passes with clocks. …
You probably think like everyone else that light is immaterial, that you can not touch it or use it as you use a jet of water and use it to …
The advantage of radio astronomy appears when the light is stopped by the presence of clouds of dust that hide certain regions of the sky. This material allows radio-frequency radiation …
Several large facilities are now operational in the milli and submillimetric bands. There is ALMA (Atacama Large Millimeter / submillimeter Array) installed in Chile. It is an international project (Europe, …
Seeing big is one thing but managing priorities is more important. The era of giant telescopes does not sign the death of “small” university instruments from 0.5 to 3 m …
The laser power of an adaptive optics is about 20 watts if not higher, 4000 times the power of a class 3A consumer laser delivering less than 5 mW! It …
When you see the size of small astronomical instruments sold in specialty stores, they only impress novices. On the other hand, a telescope of 200 mm in diameter measuring between …