to see stars and planets and other stuff in space... IDK im guessing,
someone answer, i needa know plzzz
Observatories
To their observatories
Astronomers study stars in many different places but typically, they study in observatories. The buildings where there is a telescope
Clothing is generally required. Most observatories are on mountain tops, and are kept cold to prevent condensation from fogging the mirrors and lenses. Back in the days when astronomers had to actually LOOK through the telescopes, this meant that they generally dressed warmly. Nowadays, all the telescope sensors are electronic, and astronomers no longer live at their observatories. Everything except the physical maintenance is done remotely, via computer. So they can dress any way they like.
Observatories need for the area to have dark skies so that they have a better view of the heavens. In Arizona, the City of Tucson regulates lights of businesses and streets so that the skies are dark enough for the astronomers at Kitt Peak.
The Mayans had, apparently, been expert astronomers, but the first chain of astronomical observatories would be the Muslims in the 9th century. However, Stonehenge is, apparently according to a concept, an observation centre built by the prehistoric people who inhabited Europe.
the astronomers use Absolute magnitude
Yes, there are many observatories all around Europe.
Astronomers use infrared light to map the dust in between stars.
I take that you are asking 'astronomical observatories'. 'Observatory' is a noun, observatories is the plural form. Astronomical is simple a modifier (adjective, in this case.)
They use the bathroom like anyone else in a house or building. They use the restroom, they are astronomers, not astronauts.
Astronomers can use their eyes to study the stars. They can also use various telescopes that either refract, reflect, and detect exotic formations.