What is a mass of an object with a volume of 4 l and density of 1.25 g/

Stage in which a typical star has completely stopped fusion

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

The time that is taken by neptune once around the sun is called