The Earth attracts the Moon but the Moon, even if it is smaller, also attracts the Earth a little. As >>
Observe The Sun
If you have binoculars, a telescope or a telescope, you have to attach this Mylar sheet in front of the >>
How to observe the sun?
If you want to observe the Sun, ask your parents for help to observe it safely. You can never observe >>
Where to observe the sky?
You have already noticed that during the night the light dazzles and it takes time then to see again in >>
How to Recognize the First of the Last Quarter of Moon?
In the northern hemisphere, when the moon is growing, in the first quarter you can write a P with the >>
Why Does the Sun Seem to Go Up and Down in The Sky?
Like everyone else, you have seen the Sun move in the sky during the day following an arc. In reality >>
The Light Year to go Back in Time
Since we speak of light, the speed of light is used in astronomy to estimate the distance of stars, mainly >>
Astronautics covers an extremely wide range of scientific and technical studies, from the chemistry of propellant mixtures (pergols), the study >>
EHT, Event Horizon Telescope
The Event Horizon Telescope (EHT) is a set of radio telescopes scattered all over the world and linked by interferometry, >>
Observatories of Big Ear and Nançay
Of smaller size but which remains imposing and of different design, let us quote also the radio-telescope of Nançay of >>