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Dark matter: How does it explain a star's speed? - Don Lincoln

96,598 views

TED-Ed

Video Language:

  • English

Caption Language:

  • {{captionLanguage | language_name}} ({{captionLanguage}})

Accent:

  • English (US)

Speech Time:

86%
  • 2:49 / 3:16

Speech Rate:

  • 170 wpm - Fast

Category:

  • Education

Tags :

Intro:

Video Vocabulary

stately

/ˈstātlē/

adjective

impressive or grand in size or manner.

predicted

/prəˈdiktəd/

adjective verb

declared or estimated as likely to happen in future. To guess or estimate what will or might happen.

observation

/ˌäbzərˈvāSH(ə)n/

noun

Practice of performing actions required by rules.

billions

/ˈbilyən/

noun number

1000 million. thousand million.

between

/bəˈtwēn/

adverb preposition

in space separating things. In the space that separates two objects.

scientists

/ˈsīəntəst/

noun other

person who is studying or has expert knowledge of one or more of natural or physical sciences. People who are trained in a science.

spectacles

/ˈspektəkəlz/

noun other

pair of glasses. Outdated word for eyeglasses.

reduces

/rəˈd(y)o͞os/

verb

To boil a liquid until it has decreased in amount.

mankind
noun

All humans thought of as one group; humanity.

behaved

/bəˈhāvd/

adjective verb

conducting oneself in specified way. To react in a particular way in a given case.

leisurely

/ˈlēZHərlē/

adjective adverb

acting or done at leisure. without hurry.

observed

/əbˈzərv/

verb

To watch carefully; to make a comment.

whirlpools

/ˈ(h)wərlˌpo͞ol/

noun other

quickly rotating mass of water in river or sea into which objects may be drawn. Powerful circular current of water.

principles

/ˈprinsəpəl/

noun other

fundamental truth or proposition. Natural law that explains how things work.

distances

/ˈdistəns/

noun verb

length of space between two points. To make it clear that you are not involved.

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