Check out the moon phases for 1991. Thanks to our Moon Phase Calendar, you can find dates and hours of all Moon Phases in 1991. All dates and times are given both in Coordinated Universal Time (UTC) and your local time . Our 1991 calendar lists all New Moon, First Quarter, Full Moon and Third Quarter dates and times.
The Moon is the fifth largest satellite in the Solar System and the biggest in comparison to its host planet, with a diameter about one-quarter that of Earth. The exact diameter is 2159.14 miles (3 474.8 km ).
More Moon FactsAn analysis of moon's mineral composition suggests that the moon is around 4.425 billion years old.
More Moon FactsThe Moon makes Earth a more livable planet by moderating our home planet's wobble on its axis, leading to a relatively stable climate.
More Moon FactsThe Moon crust is made of composed primarily of oxygen (O), silicon (Si), magnesium (Mg), iron (Fe), calcium (Ca), and aluminum (Al), but important minor and trace elements such as titanium (Ti), uranium (U), thorium (Th), potassium (K), and hydrogen (H) are present as well. Below the crust is the mantle coming, with a thickness of roughly 1350 km is far more extensive than the crust, which has an average thickness of about 50 km. The mantle is made of olivine, orthopyroxene and clino pyroxene. Finally, at the center is the Moon’s dense, metallic core. The core is largely composed of iron (Fe) and some nickel (Ni). The inner core is a solid mass of about 480 km in diameter. Surrounding the solid inner core is a fluid outer core, that brings the total diameter of the core to about 660 km.
More Moon FactsThis is an optical illusion. The Moon looks large shortly after it rises when it's still touching the horizon. This is not the same as a Supermoon.
More Moon FactsA supermoon occurs when the Moon's orbit is closest (perigee) to Earth at the same time the Moon is full. At such a time, the Moon can look larger and brighter than it normally does - especially when it is seen rising above the horizon. However, it's important to note that the actual difference in size and brightness between a supermoon and an average full moon is not typically dramatic, and may not be noticeable to the naked eye without a direct comparison.
More Moon PhasesNo, it doesn’t generate its own light. “Moonlight” is really sunlight that has reflected off of the Moon’s surface. In the same way that the Sun illuminates Earth, the Moon reflects the Sun's light, making it appear bright in our sky.
More Moon PhasesAn orange moon means the shorter wavelengths of light are being filtered away. This could be due to the low position on the horizon causing the light to go through more atmosphere, smoke in the air, or pollution.
More Moon PhasesIt depends on the time of day. The Moon is very hot in the daytime and very cold at night. The average temperature on the Moon varies from -298 degrees Fahrenheit (-183 degrees Celsius), at night, to 224 degrees Fahrenheit (106 degrees Celsius) during the day.
More Moon PhasesThe Moon makes Earth a more livable planet by moderating our home planet's wobble on its axis, leading to a relatively stable climate.
More Moon PhasesA supermoon occurs when the Moon's orbit is closest (perigee) to Earth at the same time the Moon is full. At such a time, the Moon can look larger and brighter than it normally does - especially when it is seen rising above the horizon. However, it's important to note that the actual difference in size and brightness between a supermoon and an average full moon is not typically dramatic, and may not be noticeable to the naked eye without a direct comparison.
More Fun FactsHere are the top 5 things that make the Moon so unique.
1. The Moon is Earth's only permanent natural satellite.
2. Moon dust smells like gunpowder.
3. The Moon keeps the same face pointing toward the Earth.
4. The Moon has no – or just a really thin – atmosphere so there is no weather.
5. The Moon is visible in daylight nearly every day.
No, the moon has no water and has only a very thin and tenuous atmosphere (called an exosphere) so it cannot trap heat or insulate the surface. So, for example, there is no wind to create weather system. The Moon does, in fact, affect the Earth's climate and weather patterns in several subtle ways.
More Fun FactsAn analysis of moon's mineral composition suggests that the moon is around 4.425 billion years old.
More Fun FactsThe Moon crust is made of composed primarily of oxygen (O), silicon (Si), magnesium (Mg), iron (Fe), calcium (Ca), and aluminum (Al), but important minor and trace elements such as titanium (Ti), uranium (U), thorium (Th), potassium (K), and hydrogen (H) are present as well. Below the crust is the mantle coming, with a thickness of roughly 1350 km is far more extensive than the crust, which has an average thickness of about 50 km. The mantle is made of olivine, orthopyroxene and clino pyroxene. Finally, at the center is the Moon’s dense, metallic core. The core is largely composed of iron (Fe) and some nickel (Ni). The inner core is a solid mass of about 480 km in diameter. Surrounding the solid inner core is a fluid outer core, that brings the total diameter of the core to about 660 km.
More Fun Facts