Why do the stars and the constellations in the sky appear to change positions throughout the night and throughout the year?
(1 point)
• The Earth's tilt changes its position relative to the stars and constellations only because the Earth rotates
around its axis.
The location angle of the Earth's tilt relative to the stars and constellations remains the same throughout the
O year.
• The Earth's tilt changes its position relative to the stars and constellations as the Earth rotates and orbits.
• The stars and constellation have tilted and are also moving in space.
The stars and constellations in the sky appear to change positions throughout the night and throughout the year precisely because of the Earth's rotation on its axis and its orbit around the Sun. This explanation aligns with the second point:
• The Earth's tilt changes its position relative to the stars and constellations as the Earth rotates and orbits.
The Earth rotates about its axis once approximately every 24 hours, which causes the apparent daily motion of the stars across the sky as observed from the surface of the Earth. On any given night, as the Earth continues to turn, different stars and constellations will appear to rise in the east and set in the west.
In addition to daily rotation, the Earth also orbits the Sun once approximately every 365.25 days. This means that the night side of the Earth faces different parts of space at different times of the year. Consequently, as the Earth completes its orbit, the constellations visible in the night sky at any given time of year will gradually change.
The tilt of the Earth on its axis (approximately 23.5 degrees relative to the plane of its orbit around the Sun) also contributes to the changing view of the stars and constellations by causing seasonal shifts in the sky. The tilt remains relatively constant over the course of the year in terms of its orientation to the distant stars (which is why we have seasons), but our perspective of those stars changes as the Earth orbits the Sun.
The stars and constellations themselves also move very slowly due to their own motion through space, but this movement is not generally noticeable over a human lifespan and does not account for the changes seen over the course of a single night or year.
The purpose of the NASA Star Finder or any typical star finder (also known as a planisphere) is:
• To see how constellations change positions in the sky throughout the year.
A star finder is a simple astronomical tool that shows the layout of the stars in the sky for any given date and time. It usually consists of a rotating disk set within a larger disk. The outer disk marks the months of the year and has an opening through which the inner disk, which contains the star map, can be seen. By aligning the current date with the time, a user can see a representation of how the sky will look at that particular moment, thus making it easier to identify constellations and bright stars at any given time throughout the year.
Star finders can be helpful for educational purposes, amateur astronomy, and simply navigating and learning the night sky. They are not used to include new stars or constellations, provide images, or observe distant objects in space in the sense of an active observation tool like a telescope. Instead, they are a passive reference guide based on pre-existing knowledge of the night sky.
The first nation to put a satellite into space was the Soviet Union. On October 4, 1957, they launched Sputnik 1, which became the world's first artificial satellite successfully placed in Earth's orbit. This event marked the beginning of the space age and led to the space race between the Soviet Union and the United States.
Apologies for any confusion earlier. The correct answer you're looking for is:
• Soviet Union
The Soviet Union was indeed the first nation to put a satellite, Sputnik 1, into space.
The space exploration activity that has most helped astronomers determine the age of the moon is:
• collection of lunar rock samples
The analysis of lunar rocks collected during the Apollo missions has provided the most direct evidence of the Moon's age. By using radiometric dating techniques on these samples, scientists have estimated that the Moon is about 4.5 billion years old, which is roughly the same age as the Earth and the rest of the solar system. This information has been crucial in understanding the history and formation of the Moon.
What is the purpose of the NASA Star Finder? (1 point)
• To include new stars and constellations that are discovered every month.
• To provide images of constellations from month to month.
• To observe stars and other distant objects in space.
• To see how constellations change positions in the sky throughout the year.
Which nation was the first to put a satellite into space? (1 point)
• Soviet Union
• Germany
• United States
O China
pick the correct answer
Which space exploration activity has most helped astronomers determine the age of the moon? (1 point)
• experiments performed on the International Space Station
• collection of lunar rock samples
• collection of deep space images by the Hubble telescope
• placement of mirrors on the lunar surface