Presenter: Gary Sohn The appearances of comets have been known to humans for millennia. Until the sixteenth century, comets were usually considered bad omens of death. What is their origin? What do we know about comets? Probes from earth are telling us more about these celestial travelers. Location: Space Museum Galaxy Theater Cost: Included with Admission

Presenters: Donn Anderson and John Jennings Astronaut Scott Kelly spent almost a year in near weightlessness in orbit on the International Space Station while his identical twin Mark remained here on Earth. What have we learned about what that did to Scott versus his twin brother Mark? Location: Space Museum Galaxy Theater Cost: Included with Admission

Presenter: John Bronson Descriptions & illustrations of the Museum’s collection of American jet interceptor aircraft, is highlighted. Specifically described are the Fighters: F-94, F-89, F-102, F-101, F-104, and F-106, including the system equipment specifically installed for the Air Defense mission. How these aircraft are used, including where they were stationed is covered. Other elements of...

Descriptions & illustrations of the Museum’s collection of the newer US fighter aircraft. Specifically described are topics that led to the development of the Teen Series as a result of the Vietnam experience.

Descriptions & illustrations of what led to the Soviet blockade of West Berlin, how it was addressed, and description of the aircraft used in the Airlift.

Presenters: John Jennings and Donn Anderson  If we are going to be serious about establishing a permanent human presence on Mars, the time it takes to get there and back must be significantly reduced. We have a rocket engine that can get us to Mars in 3 months instead of 6 months! First demonstrated way...

Descriptions & illustrations of the museum’s collection of American jet aircraft is highlighted, specifically the Century Series Fighters: F-100 through F-106 including the design changes to achieve supersonic flight.

Descriptions & illustrations of early US drones, what makes unmanned aerial vehicles different than airplanes, illustrations of how they have been used, some descriptions of their onboard sensors, and associations with the museum’s exhibits.

Presenters: Donn Anderson and John Jennings What to do after Apollo ended? Use and repurpose the hardware planned for the cancelled Apollo 18, 19, and 20 missions into the gigantic for its time Skylab Earth orbiting Solar Observatory and Research Lab that hosted 3 crews for extended stays in space. How did that come about?...

Presenter: Bill Carton Launched in 1958, America's second satellite Vanguard 1 is the oldest known debris still on orbit. Recent estimates are that as many as one hundred million pieces of human-made objects are above the earth now. We are tracking 21,000 items over 10cm in size. Junk includes derelict spacecraft, upper rocket stages, explosion...