URANUS • Planetary Alignment Provides Rare Opportunity to Study Planet 23.4.25 VIDEO: This rendering demonstrates what is happening during a stellar occultation and illustrates an example of the light curve data graph recorded by scientists that enables them to gather atmospheric measurements, like temperature and pressure, from Uranus as the amount of starlight changes when the planet eclipses the star. [NASA/Langley Research Center Advanced Concepts Laboratory] • When a planet’s orbit brings i

10199 Chariklo • Centaur Asteroid Occults Star Revealing Double Rings - Archive Discovery. 9.4.2021 VIDEO: (Illustration and Light curve in post comments)The video shows an occultation by the Centaur (10199) Chariklo on 2017 June 22. Observation was made with a Raptor Merlin EM247 CCD camera attached to a 50-cm portable Alt-Az telescope. Exposure time was 80 ms (data rate was about 12.5 Hz). [Credit below] • The planetoid Chariklo (10199) is also a centaur asteroid (see note below), about 250 km