Physics:
* Stephen Hawking: Known for his work on black holes and cosmology.
* Kip Thorne: Pioneer in gravitational physics and relativity, known for his work on gravitational waves.
* Lisa Randall: Theoretical physicist working on particle physics, dark matter, and extra dimensions.
* Nergis Mavalvala: Experimental physicist working on gravitational waves and laser interferometry.
* Michio Kaku: String theorist and popularizer of science, known for his books and TV appearances.
* Neil deGrasse Tyson: Astrophysicist and science communicator, known for his outreach and popularization of science.
* Brian Greene: String theorist and popularizer of science, known for his work on string theory and the multiverse.
Chemistry:
* Jennifer Doudna: Pioneer in CRISPR-Cas9 gene editing technology.
* Emmanuelle Charpentier: Co-discoverer of the CRISPR-Cas9 gene editing system.
* Frances Arnold: Biochemist who pioneered directed evolution of enzymes.
* Carolyn Bertozzi: Chemist known for her work on bioorthogonal chemistry.
* George Whitesides: Chemist known for his work in soft lithography and self-assembly.
* Richard Schrock: Chemist known for his work on olefin metathesis.
Earth Sciences:
* James Hansen: Climate scientist known for his work on global warming.
* Susan Solomon: Atmospheric scientist known for her work on the ozone hole.
* Michael Mann: Climate scientist known for his work on the hockey stick graph.
* Wallace Broecker: Oceanographer known for his work on the carbon cycle.
* Rachel Carson: Marine biologist and writer, known for her book "Silent Spring" which helped to spark the environmental movement.
Astronomy:
* Vera Rubin: Astronomer who discovered evidence for dark matter.
* Sandra Faber: Astronomer known for her work on galaxy formation.
* Jocelyn Bell Burnell: Astrophysicist who discovered pulsars.
* Wendy Freedman: Astronomer known for her work on measuring the Hubble Constant.
* Adam Riess: Astronomer who discovered the accelerating expansion of the universe.
This is just a small sample of the many brilliant minds working in physical science today. The field is constantly evolving, and new discoveries are made every day. To stay up-to-date on the latest developments, I recommend following scientific journals, news outlets, and the work of individual researchers.