During NASA's New Horizons spacecraft's journey of meeting Pluto, it has clicked pictures that are revealing new facts about the dwarf planet.

Mission's principal investigator Alan Stern of the Southwest Research Institute said, "They show an increasingly complex surface with clear evidence of discrete equatorial bright and dark regions - some that may also have variations in brightness".

Stern said it has also been unveiled every side of Pluto is different. Images taken between May 29 and June 2 have revealed a bright area at one of Pluto's poles that scientists think is an ice cap.

It might also look like Pluto is non-spherical, but researchers have refuted that claim. They said illusion could be due to intensive image processing and also due to the wide variations in surface brightness.

On July 14, the probe will make a historic Pluto flyby. Pictures clicked at that time will be much better, expect researchers. NASA has also been inviting media to cover New Horizons' historic Pluto flyby. The American agency has also revealed its schedule for briefings on the approaching flyby.

The first NASA TV update is scheduled for 11.30 am ET on July 16 and then weekly updates have been planned for June 23 and 30. NASA said that there will be extended series of briefings on July 13, a day before the flyby.

NASA will be covering the event and its coverage will start at 7am ET and the moment of the flyby is marked at 7.49 am.