We do not HAVE to use satellites. You can look up and see the sun or stars - depending on the time of day - using only your eyes.
Many different objects in space revolve around many other things. Usually, it is acceptable to use the term 'satellite' when describing a moon's orbit around a planet, or even a planet's orbit around a star.
Objects like planets, stars, and galaxies use gravitational energy to hold themselves together and maintain their positions in space. This energy is also utilized by objects that are in motion due to gravity, such as satellites orbiting around a planet or a moon orbiting around a planet.
they used to use the space shuttle but now they use unmaned space craft or the russians/ESA european space agency
We use telescopes or satellites
Telescopes, spectroscopes, space probes.
artificial satellites , probes, telescope etc
Currently, we use the cargo space of rockets for satellites.
Use a telescope.
By the use of rockets
In space, an exact location can be defined using celestial coordinates such as right ascension and declination for deep space objects, or orbital parameters for artificial satellites. For objects within our solar system, locations can be identified by heliocentric or geocentric coordinates. Additionally, space agencies use precise tracking systems like GPS or ground-based telescopes for real-time monitoring and positioning of spacecraft.
astronomers collect data by diverse technical equipment: - by space probes -by telescopes -by satellites -and by other technical equipment In general they often also use radiometry/radiation and take pictures of astronomic objects, sometimes they also land on some objects and take samples, sometimes also by meteorites (that strike on earth).
Space satellites rely on solar energy for power. Solar panels on the satellite convert sunlight into electricity to power the various systems onboard. The use of solar energy allows satellites to operate efficiently in space where other energy sources may not be available.