telescope
A telescope is an instrument used to observe distant objects, such as stars, planets, and galaxies, with the eyes. Telescopes gather and focus light to provide a magnified view of celestial objects. They come in different types, such as refracting telescopes and reflecting telescopes.
The instrument scientists use to observe the planets is a high powered telescope.
A cross staff is a navigational instrument used to measure angles, typically for celestial navigation, by aligning a crosspiece with an object in the sky. An astrolabe is a historical instrument used to observe and measure the positions of stars and planets. It was used for navigation, timekeeping, and astrology.
Telescope
At the Age of Exploration they used telescope to observe stars.
Electronic microscope
A telescope is commonly used to watch the skies. It enables astronomers and stargazers to observe celestial bodies like planets, stars, galaxies, and other objects in space with greater clarity and detail.
They used a telescope
A Periscope or Radar
well you can use a microscope
A telescope is commonly used to view objects in space. Telescopes collect and focus light from distant objects, enabling astronomers to observe and study celestial bodies such as stars, planets, and galaxies.
That is a telescope