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Cosmology > What Is The Universe > Flashcards

What Is The Universe Flashcards

1
Q

What Is our Home Star called

A

The Sun

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2
Q

What is t temperature of the corona of he sun

A

Several million degrees

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3
Q

What is the name of the Japenese Satalite that studied the sun

A

YOKOH Satalite

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4
Q

How far is the sun from us in light time

A

8 light minutes

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5
Q

How far is Mars in light time

A

4 Light minutes

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6
Q

What is the Vast Canyon system known as on Mars

A

Valles Marieneris

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7
Q

Hi far is Saturn in light time from us

A

71 light minutes

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8
Q

Which spacecraft took beautiful pictures of Saturn’s rings

A

Cassini

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9
Q

How far is IO from us in light time

A

34 light minutes

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10
Q

How many moons does Jupiter have

A

63 (many more to be discovered)

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11
Q

What is the name of Jupiter’s innermost moon

A

IO

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12
Q

Which asteroid is shown at the beginning of the book as an example of an asteroid orbiting the sun

A

433 Eros

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13
Q

How far from earth is Jupiter in light time

A

34 Light Minutes

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14
Q

What is the name of the mysterious swirling vortex on Jupiter

A

The Great Red Spot

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15
Q

How long have we known about the Great Red Spot

A

Since the 17th Centrury

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16
Q

What spacecraft visited Jupiter in 1979

A

Voyager 1

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17
Q

How far from us is the centre of the Galaxy

A

25,000 Light Years

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18
Q

How heavy is the Black Hole at the centre of our Galaxy

A

As heavy as 3 Million Suns

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19
Q

What is the name of the phenomena which in a black whole is the point of no return for any object or light

A

Event Horizon

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20
Q

How far away is the Galaxy Centaurus A

A

15 Million Light years

21
Q

What is the name of the vast cloud of dusty Gas within the Milky Way where Stars are forming

A

The Orion Nebula

22
Q

How Far away is the Orion Nebula

A

1,500 Light Years

23
Q

When did the Universe begin and with what Theory

A

13.7 Billion years ago in the Big Bang

24
Q

How far does Light travel in a year

A

5,878 Billion (5.8 million - millions)

25
Q

How fast is the speed of light

A

186,000 miles per second (around the world 7.5 times in 1 second) the earth is 24,000 miles

26
Q

What is the Earths Diamiter

A

7,930 miles

27
Q

What is the diameter of the Moons Orbit around the Earth

A

480,000 Miles

28
Q

How long does it take a probe to get to the Moon

A

2 to 3 days

29
Q

The Earth Moon system is part of what?

A

The Solar System

30
Q

How far does our Solar System reach out

A

To the comets 1.6 light years away

31
Q

How far away is Pluto

A

3.7 Billion Miles

32
Q

What is the closest Star system to the Sun

A

Alpha Centauri 4.35 light years away

33
Q

How many star systems are there within 20 light years of the sun

A

79 Star systems containing 106 stars

34
Q

What are Binery Stars

A

Two stars within the same system

35
Q

What is the Beightest star in the night sky

36
Q

How many stars form the Milky Way

A

200 Billion

37
Q

How large is the Milky Way

A

100,000 light years across

38
Q

What is our cluster of Galaxy’s called

A

The local Group

39
Q

How many Galaxies are contained within the Local Group

40
Q

How much distace does the Local Group of Galaxies cover

A

10 Million Light years

41
Q

What kind of Galaxies are mostly contained within the Local Group

A

Small Dwarf Galaxies

42
Q

What Galaxy within the local group is larger than our own

43
Q

What Galaxy Group is mentioned on this page

A

The Virgo Cluster

44
Q

What Supercluster are we part of

A

Virgo Supercluster

45
Q

What is the size of the Virgo Supercluster

A

100 Million Light years (tens of thousends of Galaxies)

46
Q

What is the name given to the Spherical Region around Earth from which Light has had time to reach us since the Universe began

A

the Observable Universe

47
Q

What is the name given to the boundry that seperates the Observable Universe from the rest of the universe

A

The Cosmic Light Horizon

48
Q

How far must the light at the Event Horizon must have taken to reach the Earth

A

13.7 Billion Years

Cosmology (4 decks)

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