Simplify the following text for a Grade 9 native English-speaking person.
Original: The moon covers only a few pixels , but seems to be an elongated object with axes 150 Â 20 and 120 Â 20 km , close to the Earth-based estimations .
Simplified: The moon covers only a few pixels , but seems to be a stretched object with axes 150 Â 20 and 120 Â 20 km , close to the Earth-based estimations .