Read the following statements carefully:
1.Astronomers have discovered four new rogue planets that do not have stars to orbit. Researchers found the planets in the regions called the Galactic bulge and disk.
2.As planets don't orbit stars and are 'free-floating,' it's difficult to determine the size.
3.One planet could be similar in size to Earth, while another one may be similar to Jupiter.
Which of the above statements is/are correct?