I have a beginner telescope of 50mm and want to see planets it is arefractor with f/12 ratio and two eyepieces of 5mm and 10mm and i want to see mars, Jupiter, Saturn and venus. my max zoom ix 120x…
So, I was always amazed by images of NEOWISE around the Internet like this: Or this: Yet, all my efforts to see it or photograph it in its full glory were fruitless… 22.07.2020 22:01 Here you…
Suppose somebody went on an island and don't have sense about time, dates, months. The only thing he has is seeing the sky. Is it possible to recognise which lunar month it is by just looking the s…
The surface temperatures of Mars are about -87C to 5C, which is much colder than that of Earth's. If Mars has 95% carbon dioxide, which is a Greenhouse gas, why is the surface of Mars so cold? Sho…
During the Tertiary era or Cenozoic period some of the most spectacular mountains on our planet were formed. These are relatively young formations, such as the Himalayas or the Andes. This last mountain range is one of the highest on Earth, due to the short geological time period in which erosion has acted on it.
Does anyone know a good example of visual (or interferometric) binary star apparent orbit of which looks circular due to projection though in fact is markedly elliptical? I need that for teaching.
