You searched for: “year
(in 1946, an eighteen-year-old San Diego High School student wrote an essay in which he asked for plain courtesy when driving)
Word Entries containing the term: “year
cosmic year (s) (noun), cosmic years (pl)
The time it takes the Sun to travel around the center of the galaxy: A cosmic year, the period of revolution of the Sun around the galaxy, takes roughly 22.5 million years.
This entry is located in the following unit: Astronomy and related astronomical terms (page 7)
light-year, light year (s) (noun); light-years; light years (pl)
The distance traveled by a beam of light in a vacuum in one year, approximately 9.46 trillion (million million) kilometers or 5.99 trillion miles: A light-year has an average speed of 186,291 miles or 299,792 kilometers, per second; which equals approximately 5.88 trillion miles or 9.4607 trillion kilometers, or 63,246 astronomical units.

The light-year is also divided into light-minutes and light-seconds; for example, the Moon is 1.3 light-seconds from the Earth and the Sun is 8.3 light-minutes away from the Earth.

Although a light-year is a measurement of distance and not time, it does imply time, such as the light from a star that is ten light-years from the Earth takes ten years to reach the Earth. So, an observer on Earth is seeing the star as it appeared ten years ago.

McGraw-Hill Year Book of Science & Technology
McGraw-Hill, Inc.; New York; 1992.
This entry is located in the following unit: Sources of Information; Science and Technology (page 1)
The 106-year-old Virginia McLaurin, an African-American, was very excited to meet the Obamas in the White House and she was dancing with joy.

Ms. McLaurin was invited as part of a Black History Month celebration. “I thought I would never live to get into the White House and I tell you I am so happy to have a black president,” she said to the smiling Barack Obama and the first lady, Michelle Obama.

Click on this link: to see the video posted by the White House as Virginia McLaurin opens her arms wide and greets Obama with an excited "Hi!".

This entry is located in the following unit: Videos (page 1)