ASP Cheat Sheet 2026
The 30 highest-yield ASP facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.
- Includes President, Vice-Presidents, Secretaries, and Treasurer → Officers
- What is the James Webb Space Telescope (JWST) primarily designed to observe? → Infrared wavelengths
- Can preside in absence of President, assist in Society matters. → Vice-Presidents
- What is a charge-coupled device (CCD) in astronomy? → A highly sensitive electronic light detector that converts photons to electrical signals
- What is the event horizon of a black hole? → The boundary beyond which nothing can escape the black hole's gravity
- What was the primary mission of the Voyager spacecraft? → To fly by the outer planets and eventually leave the solar system
- What determines where a star will fall on the main sequence? → Its mass
- Not permitted, members must be present and dues paid to vote. → Proxy Voting
- Charles Messier compiled his famous catalog of nebulae and star clusters in the 18th century. What was his original motivation for creating this list? → To avoid confusing these fuzzy objects with comets he was hunting
- What is the International Space Station (ISS) primarily used for? → Microgravity research and scientific experiments in low Earth orbit
- National program improving astronomy teaching through partnerships. → Project ASTRO
- What is the Hubble Space Telescope's orbit and its significance? → Low Earth orbit at ~540 km altitude, above most of the distorting atmosphere
- What stellar remnant is left after a low-mass star like the Sun ends its life? → White dwarf
- What is the resolving power of a telescope? → The ability to distinguish two closely spaced objects as separate
- What is the Drake Equation used to estimate? → The number of communicating extraterrestrial civilizations in the Milky Way
- What is a T Tauri star? → A young pre-main-sequence star still contracting toward the main sequence
- What is a stellar parallax used to measure? → A star's distance from Earth
- What technology does the Event Horizon Telescope (EHT) use to achieve its resolution? → Very Long Baseline Interferometry (VLBI) linking radio telescopes across the entire Earth
- ASP's quarterly online membership magazine covering various astronomy topics → Mercury
- Members who have been elected as per the society's guidelines → Active Members
- What type of supernova results from the thermonuclear explosion of a white dwarf? → Type Ia
- What is the purpose of adaptive optics in ground-based astronomy? → To correct for atmospheric distortion in real-time, producing sharper images
- What is the Great Red Spot on Jupiter? → A persistent high-pressure storm
- Called for specific purposes with notice, requires active or life member requisition. → Special Meeting
- What is the Local Group of galaxies? → The group of approximately 80 galaxies that includes the Milky Way and Andromeda
- Which region of the solar system is considered the source of long-period comets? → Oort Cloud
- Utilizing resources from the My Sky Tonight project in classrooms. → Project PLANET
- Series of over 400 volumes of professional astronomy conference proceedings → Astronomical Society of the Pacific Conference Series (ASPCS)
- Exempt from annual dues after payment, may receive special privileges. → Life Member
- What is the CNO cycle in stellar physics? → Carbon-Nitrogen-Oxygen fusion cycle used by massive stars to fuse hydrogen
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