Indian Scientists

Consider the following statements:

1. Recently, Indian scientists, along with international collaborators from Brazil and France, have derived the accurate value of Pluto’s atmospheric pressure at its surface.
2. The atmospheric pressure of Pluto was found to be 8.23 μbar, which is over 80,000 times less than the atmospheric pressure at mean sea level on Earth.
3. In astronomy, an occultation happens when a celestial object gets hidden from the view of the observer due to another celestial object passing in between them.

Which of the above statement(s) is/are true?