Astronomy Vocab Flashcards

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1
Q

Ptolemy

A

Claudius Ptolemy was a Greco-Roman mathematician, astronomer, geographer, astrologer, and poet of a single epigram in the Greek Anthology

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2
Q

Copernicus

A

Nicolaus Copernicus was a Renaissance-era mathematician and astronomer who formulated a model of the universe that placed the Sun rather than the Earth at the center of the universe

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3
Q

Brahe, Tycho

A

Tycho Brahe was a Danish nobleman, astronomer, and writer known for his accurate and comprehensive astronomical and planetary observations. He was born in the then Danish peninsula of Scania.

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4
Q

Kepler, Johannes

A

Johannes Kepler was a German mathematician, astronomer, and astrologer. Kepler is a key figure in the 17th-century scientific revolution.

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5
Q

Galileo

A

Galileo Galilei was an Italian polymath. Galileo is a central figure in the transition from natural philosophy to modern science and in the transformation of the scientific Renaissance into a scientific revolution.

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6
Q

Newton, Isaac

A

Sir Isaac Newton PRS was an English mathematician, astronomer, theologian, author and physicist who is widely recognized as one of the most influential scientists of all time, and a key figure in the scientific revolution.

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7
Q

Hubble, Edwin

A

Edwin Powell Hubble was an American astronomer. He played a crucial role in establishing the fields of extragalactic astronomy and observational cosmology and is regarded as one of the most important astronomers of all time

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8
Q

Ursa major

A

Ursa Major is a constellation in the northern sky, whose associated mythology likely dates back into prehistory. Its Latin name means “greater she-bear”, standing as a reference to and in direct contrast with nearby Ursa Minor, the lesser bear.

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9
Q

Ursa minor

A

Ursa Minor, also known as the Little Bear, is a constellation in the Northern Sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle

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10
Q

Orion

A

Orion is a prominent constellation located on the celestial equator and visible throughout the world. It is one of the most conspicuous and recognizable constellations in the night sky. It was named after Orion, a hunter in Greek mythology

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11
Q

Canis major

A

Canis Major is a constellation in the southern celestial hemisphere. In the second century, it was included in Ptolemy’s 48 constellations and is counted among the 88 modern constellations

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12
Q

Cassiopeia

A

Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty

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13
Q

Red giant

A

A red giant is a luminous giant star of low or intermediate mass in a late phase of stellar evolution. The outer atmosphere is inflated and tenuous, making the radius large and the surface temperature around 5,000 K or lower

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14
Q

White dwarf

A

a small very dense star that is typically the size of a planet. A white dwarf is formed when a low-mass star has exhausted all its central nuclear fuel and lost its outer layers as a planetary nebula.

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15
Q

main sequence

A

This Hubble Space Telescope image shows Sirius A, the brightest star in our nighttime sky, along with its faint, tiny stellar companion, Sirius B.

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16
Q

Supernova

A

A supernova is a transient astronomical event that occurs during the last stellar evolutionary stages of a massive star’s life, whose destruction is marked by one final titanic explosion

17
Q

Black hole

A

a region of space having a gravitational field so intense that no matter or radiation can escape

18
Q

Parallax

A

he effect whereby the position or direction of an object appears to differ when viewed from different positions, e.g., through the viewfinder and the lens of a camera

19
Q

Light-year

A

a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 × 1012 km

20
Q

Polaris

A

Polaris, designated Alpha Ursae Minoris, commonly the North Star or Pole Star, is the brightest star in the constellation of Ursa Minor. It is very close to the north celestial pole, making it the current northern pole star.