Velocity and gravity (movement around the Earth and the gravity of the Earth pulling on it).
The Earth is in orbit round the Sun, but also the Sun is moving round the centre of our galaxy, and of course we follow along.
The moon found itself in Earth's orbit. The planets orbit the sun. Etc.
The apparent movement of planets through the constellations is due to the combined effect of Earth's orbit around the Sun and the orbit of the planets themselves. As Earth moves in its orbit, the perspective from which we view the planets changes, creating the illusion of them moving relative to the background of fixed stars in the constellations.
Uranus takes about 30,687 Earth days (just over 84 Earth years) to make one orbit of the Sun.
Halley's Comet is in a closed gravitational orbit of the sun ... just like the Earth, all the other planets, and all the asteroids are. An object in a gravitational orbit keeps going unless there's something that acts on it to make it stop. That's how gravity works, and all other motions in general.
it takes 365 days for the earth to make one complete orbit around the sun
Earth takes a lot longer to make one complete order around the sun than Mercury does. The time required for Mercury to make one orbit is equal to 88 Earth days (whereas one orbit for Earth is about 365 Earth days).
The gravity from the sun "holds" the planets into place and make them orbit the sun. Just like the gravity from the Earth makes the moon orbit the Earth.
It takes one year for the earth to orbit around the sun
John Glenn .
For the Earth to make one complete orbit it takes 24 Hours 365 days or a full yearA year... which is 365.25 days.all the way around the sun, one year
It takes 4332.50 Earth days for Jupiter to orbit the sun.