Constellations are the patterns of stars. They are visible from Earth at different times of the year, depending on the location of the Earth in its orbit around the sun.
The NASA Star Finder helps us learn which constellations are visible from Earth each month.
NASA was created for space exploration. The Soviet Union sent a satellite into space first and the USA was determined to be the first country to send a person to the moon. On July 20, 1969, the first men walked on the moon. They were US Astronauts Neil Armstrong and Buzz Aldrin. The space missions to the moon brought back rocks and soil samples, which are still studied by geologists today.
The Hubble Space Telescope orbits Earth every 96 minutes. For the past 30 years it has sent 80 gigabytes of data to scientists every month. Images include galaxies and stars.
The first successful flyby of Mars was the NASA Mariner 4 in 1965. The first NASA orbiter/rover to land on Mars is the Mars Pathfinder in 1997. The Mars rover Curiosity is on Mars now and sending back photos and data to Earth. Moons are part of the solar system. They orbit planets instead of the sun. The Earth has 1 moon, Jupiter has 79, and Saturn has 83. Moons are held in orbit around planets by gravity.