How do scientists know about the universe?
NASA astronomers use several kinds of telescopes in space and on the ground.
Each observes targets like stars, planets, and galaxies, but captures different wavelengths of light using various techniques to add to our understanding of these cosmic phenomenon..
What are 5 questions about the solar system?
Questions
How many planets are in our solar system?Which Galaxy is our solar system in?Which planet is closest to the sun?What do planets in the solar system orbit around?Which is the biggest planet in the solar system?Which planet is the furthest from the sun?How many planets in the solar system are made of gas?.What is the basic knowledge of planets?
A planet is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit..
What is the universe knowledge?
Characteristics of the Universe of Knowledge
i) It is composed of scattered segments separated by space. ii) It is not continuous like time, a river or a line. iii) It is infinite, multidimensional, dynamic and expanding in all directions.
The expansion is invariably linked with time..
- How did our Universe begin and how will it end? What is dark matter? How did the known structures in the Universe evolve? How do massive black holes grow?
- The proper distance—the distance as would be measured at a specific time, including the present—between Earth and the edge of the observable universe is 46 billion light-years (14 billion parsecs), making the diameter of the observable universe about 93 billion light-years (28 billion parsecs).
