If we had No Moon - P1

The Moon is Earth's only natural satellite and is the fifth largest satellite in the Solar System. It is the largest natural satellite in the Solar System relative to the size of its planet, a quarter the diameter of Earth and 1/81 its mass, and is the second densest satellite after Io. It is in synchronous rotation with Earth, always showing the same face; the near side is marked with dark volcanic maria among the bright ancient crustal highlands and prominent impact craters. Despite being the brightest object in the sky after the Sun, its surface is actually very dark, with a similar reflectance to coal. Its prominence in the sky and its regular cycle of phases have since ancient times made the Moon an important cultural influence on language, the calendar, art and mythology. The Moon's gravitational influence produces the ocean tides and the minute lengthening of the day. The Moon's current orbital distance, about thirty times the diameter of the Earth, causes it to be the same size in the sky as the Sun allowing the Moon to cover the Sun precisely in total solar eclipses.
The Moon is the only celestial body on which humans have made a manned landing. While the Soviet Union's Luna programme was the first to reach the Moon with unmanned spacecraft, the United States' NASA Apollo program achieved the only manned missions to date, beginning with the first manned lunar orbiting mission by Apollo 8 in 1968, and six manned lunar landings between 1969 and 1972 the first being Apollo 11 in 1969. These missions returned over 380 kg of lunar rocks, which have been used to develop a detailed geological understanding of the Moon's origins (it is thought to have formed some 4.5 billion years ago in a giant impact), the formation of its internal structure, and its subsequent history.

Moon
Orbital characteristics
Perigee 363,104 km (0.0024 AU)
Apogee 405,696 km (0.0027 AU)
Semi-major axis 384,399 km (0.00257 AU)
Eccentricity 0.0549
Orbital period 27.321582 d (27 d 7 h 43.1 min)
Synodic period 29.530589 d (29 d 12 h 44 min 2.9 s)
Average orbital speed 1.022 km/s
Inclination 5.145° to the ecliptic
(between 18.29° and 28.58° to Earth's equator)
Longitude of ascending node regressing by one revolution in 18.6 years
Argument of perigee progressing by one revolution in 8.85 years
Satellite of Earth
Physical characteristics
Mean radius 1,737.10 km (0.273 Earths)
Equatorial radius 1,738.14 km (0.273 Earths)
Polar radius 1,735.97 km (0.273 Earths)
Flattening 0.00125
Circumference 10,921 km (equatorial)
Surface area 3.793 × 107 km2 (0.074 Earths)
Volume 2.1958 × 1010 km3 (0.020 Earths)
Mass 7.3477 × 1022 kg (0.0123 Earths)
Mean density 3,346.4 kg/m3
Equatorial surface gravity 1.622 m/s2 (0.165 4 g)
Escape velocity 2.38 km/s
Sidereal rotation
period 27.321582 d (synchronous)
Equatorial rotation velocity 4.627 m/s
Axial tilt 1.5424° (to ecliptic), 6.687° (to orbit plane)
Albedo 0.136
Surface temp. min mean max
equator 100 K 220 K 390 K
85°N 70 K 130 K 230 K
Apparent magnitude −2.5 to −12.9
−12.74 (mean full Moon)
Angular diameter 29.3 to 34.1 arcminutes
Atmosphere
Surface pressure 10−7 Pa (day)
10−10 Pa (night)
Composition Ar, He, Na, K, H, Rn

Category:

Science & Technology

Tags:

• The Moon
• Moon Lunar Libration
• Lunar Phases
• Lunar Farside
• the faces of the moon
• lunar rotation
• the Moon
• moon
• Earth
• solar system
• lunar months
• sidereal month
• kurdistan planetarium
• kurd
• kurdistan

[CueChloeMuse]

I want to work for nasa when I'm older. Space has always fascinated me.

[KurdstanPlanetarium]

@CueChloeMuse well you going to have a bright future if you work for NASA...Good Luck then :)

[chuymoreno13]

If another planet did collide with earth and made the moon, why is there still

water on planet earth, the oceans would've evaporated don't you think?

[KurdstanPlanetarium]

@chuymoreno13 just to let you know the planet that collided with Earth provided most of the water Earth have now. so we owe most of our ocean water to that collision , thats why that collision shaped life here on Earth and we are here too because of it !!

[aceabe22]

@KurdstanPlanetarium u really kno ur science on space

[KurdstanPlanetarium]

@aceabe22 Thank you !

[KurdstanPlanetarium]

@SteadyEdits This as you call it crap, is to tells you the importance of our Moon, in our life, it shuld be respect it...back in the beginning of the Cold War, the super powers were trying to use it for their evil politics as a nuclear test ground or some were trying to knocked out from its orbit just to show their superior power the other side !! what would you say to that ??

[shermanak74u]

i love how the vid is labelled ''if we had no moon'' yet it only explains why its there

[carfedeimdude]

is it just me, or this guy sounds just like Professor Charles Xavier (Patrick Stewart)?!

[Kraizer666]

@mayrahbby26

Oh how gullible you are. Evolution takes place believe it or not. Lets do this, I thought of it a few days ago in a conversation.

Lets say all of these events really took place, Earths creation from the big bang, the Big Bang itself.... everything. Where does God come in? Well, God created the necessary components for life. He created the particles that make up our universe, and is the reason life even started on Earth. This way, Science and Religion have space from each other.

[Kraizer666]

@KurdstanPlanetarium

To that, I would say, we are fucked.

[MrTHEREALNIGGA]

i think this is star trek :D

[jasenrooks2001]

i got from world war 3 to videos if we had no moon