Thomas Street (astronomer)

High school (ages 12+)
Space & Astronomy

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/thomas-street-astronomer

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. When was Thomas Street (astronomer) born?1833
2. When did Thomas Street (astronomer) die?1902
3. Who was Thomas Street?Thomas Street was an astronomer who lived from 1833 to 1902 and studied stars using light.
4. What is spectroscopy?Spectroscopy is a method that splits light into many colors, revealing tiny lines that show what stars are made of.

Stellar Spectroscopy: The scientific discipline of analyzing the light from stars to determine their chemical composition, temperature, motion, and other physical properties.
Spectral Lines: Distinctive patterns of light absorption or emission at specific wavelengths, acting as unique fingerprints for chemical elements.
Doppler Effect (in Astronomy): The change in frequency of light from a celestial object due to its motion towards or away from the observer, used to measure velocity.
Nucleosynthesis: The process by which new atomic nuclei are created from pre-existing nucleons and nuclei, primarily occurring within stars.