No. There would be no asteroids that are bigger than stars.
Update:
There is actually an asteroid -3800 Sirius that they could be referring to. It is stated to contain 1/4 the mass of the asteroid belt, to have been upgraded to the status of a miniplanet (here we go again) and to have compacted itself into a round shape.
Source: The Universe TV series - 7 Wonders of the Solar System episode.
They all are bigger than an asteroid.
No, Sirius is not an asteroid. Sirius is a binary star system consisting of the brighter star, Sirius A, and its companion, Sirius B, which is a white dwarf star. It is the brightest star in the Earth's night sky.
Rigel is approximately ten times LARGER than Sirius
Yes.
Even the smallest planet is larger than the largest asteroid.
Yes. Sirius actually consists of two stars. The main object, Sirius A is not only bigger than Earth but is almost twice the diameter of the sun. The secondary star, Sirius B is a collapsed remnant of a star called a white dwarf. It is slightly smaller than Earth but far denser.
Yes much bigger.
Yes, planets would be much bigger.
Because Sirius is closer to the earth that's why it is bigger
Yes, Sirius is quite big while Barnard's star is small.
No. The universe is everything that exists.
No. Asteroids are much smaller than Earth.