Astronomy
Paleoclimatology is the area of Earth science that examines the physical and biological changes that have occurred in Earth's past. It uses evidence such as ice cores, tree rings, and sediment layers to understand past climates and environmental conditions.
Electricians. Electricians uses (life/earth and space/physical) science.
An observatory is the name of a place that uses telescopes and other scientific equipment to study space and astronomy. The Mount Polamar Observitory in the west of the US is an iconic example. Today, Earth based observitories are supplimented by space telescopes.
their job IS science. An astronomer studies the stars to increase our knowledge of astronomy (a discipline of science). In addition, an astronomer uses science to do his job. The telescope as well as computers used to calculate data are scientific tools. The telescopes that are bringing the most advancement into the field of astronomy right now are in space (which took a lot of science to build and put where they are) orbiting the earth.
To look at things in the sky\
No, digital telescopes don't exist. The telescope which we know are optical telescopes and what NASA uses are radiation based telescopes, or something related to radioactivity. As far I know, I've never heard about digital telescopes.
Geographers, according to my textbook
There are several astronomical telescopes in orbit. The most famous is of course the Hubble, but COROT, MOST, and the Swift Gamma-Ray Burst Observer are all visible light telescopes in orbit around Earth, and there's another - Kepler - that doesn't orbit Earth, but does orbit the Sun. There are also a multitude of orbital telescopes that use segments of the electromagnetic spectrum other than visible. Spitzer, for example, uses infrared light (it's another solar orbiter).
A reflecting telescope.
all telescopes use a mirror.
It is an observatory.
An astronomer uses telescopes to study space. They observe celestial objects like stars, planets, galaxies, and other phenomena to understand the universe's properties and behavior.