Probably the Sun, but most scientists believe that the planets formed pretty quickly after that; the math doesn't seem to allow much time between the Sun igniting and the planets starting to form.
It was probably a fairly chaotic time; the chances are that there were dozens, perhaps HUNDREDS of small planetoids that then merged by repeated collisions. In fact, we're fairly sure that the Earth came to be as it is and the Moon formed when the pre-Earth collided with another smaller planet perhaps as large as Mars. The debris blasted into space then collected in orbit to form the Moon.
The sun came first and the moon was created sometime after the earth.
How the earth and sun came to be
Copernicus came up with the theory that the Earth revolved around the Sun
In milliions of years the sun will expand and will engulf the first few planets - including Earth.
Sun first, then the earth and moon formed at the same time around 4.65ga (billions of years ago) when a large moon-sized planet collided with the proto-earth/moon system.
Some stars came before our sun. Some came after.
Earth is third from the Sun .
micro organisms came on earth first which were aquatic
the first man on the earth
The first man to came on earth was messenger of Allah Hazrat Adam (A.S)