on April 24, 2022
What is the official name of the Milky Way galaxy?
Space and AstronomyThe term “Milky Way”, a term which emerged in Classical Antiquity to describe the band of light in the night sky, has since gone on to become the name for our galaxy. Like many others in the known Universe, the Milky Way is a barred, spiral galaxy that is part of the Local Group –
on April 24, 2022
Are the moon phases the same in the northern and southern hemisphere?
Space and AstronomyYes, everyone sees the same phases of the Moon. People north and south of the equator do see the Moon’s current phase from different angles, though. If you traveled to the other hemisphere, the Moon would be in the same phase as it is at home, but it would appear upside down compared to what
on April 24, 2022
What is the perimeter of composite figure?
Space and AstronomyPerimeter of Composite Figures To find the perimeter of a composite two-dimensional figure, add the lengths of the sides. How do you find the perimeter and area of a composite figure? Add up the length of all the sides to get the perimeter. Calculate the area of the composite figure by adding up the areas
on April 24, 2022
Why is the umbra so small?
Space and Astronomy“Why is the shadow of an eclipse a lot smaller than the Moon?” Because the Sun is larger than the Moon, so the Moon’s umbra gets smaller as it falls away from the Moon, like a cone shape. The penumbra gets bigger, just like you would expect, but the umbra gets smaller. You can see
on April 24, 2022
What was discovered with the refracting telescope?
Space and AstronomyGalileo Galilei’s discovered the Galilean satellites of Jupiter in 1610 with a refracting telescope. What other things were developed using the refracting telescope design? The refracting telescope design was originally used in spy glasses and astronomical telescopes but is also used in other devices such as binoculars and long or telephoto camera lenses. What was
on April 24, 2022
Is Saturn a sun?
Space and AstronomySaturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter. It is a gas giant with an average radius of about nine and a half times that of Earth.…Saturn. Designations Mass 5.6834×1026 kg 95.159 Earths Mean density 0.687 g/cm3 (0.0248 lb/cu in) (less than water) 0.1246 Earths Is
on April 24, 2022
What is horizontal distance in surveying?
Space and AstronomyIn plane surveying, the distance between two points means the horizontal distance. If the points are at different elevations, then the distance is the horizontal length between plumb lines at the points. What is horizontal distance? Horizontal distance means the distance between two points measured at a zero percent slope. What is horizontal and slope
on April 24, 2022
How did Sputnik 1 change the world?
Space and AstronomySputnik made it possible to test satellite pressurisation, to study radio wave transmission and the density of the atmosphere, and allowed scientists to learn how to track objects in orbit. Sputnik 1 orbited Earth every 96 minutes, and the fact that it passed over the USA seven times a day worried many Americans. Why was
on April 24, 2022
How many meteors enter the Earth’s atmosphere?
Space and AstronomyAn estimated 25 million meteoroids, micrometeoroids and other space debris enter Earth’s atmosphere each day, which results in an estimated 15,000 tonnes of that material entering the atmosphere each year. How many meteors enter the atmosphere daily? 25 million meteors If larger it survives to impact on the ground, although it will be reduced in
on April 24, 2022
What is a term number in math?
Space and AstronomyA term is a single mathematical expression. It may be a single number (positive or negative), a single variable ( a letter ), several variables multiplied but never added or subtracted. Some terms contain variables with a number in front of them. The number in front of a term is called a coefficient. What is