ASP Space Exploration and Modern Astronomy

Question 1

What was the first artificial satellite launched into Earth orbit?

Accepted Answer

Sputnik 1

Answer

Sputnik 1, launched by the Soviet Union on October 4, 1957, was the first artificial Earth satellite, marking the beginning of the space age and the space race.

Question 2

What was the primary mission of the Voyager spacecraft?

Accepted Answer

To fly by the outer planets and eventually leave the solar system

Answer

Voyager 1 and 2 (launched 1977) conducted flyby missions of Jupiter, Saturn, and (Voyager 2 only) Uranus and Neptune, then continued into interstellar space — Voyager 1 became the first human-made object to enter interstellar space in 2012.

Question 3

What is the Hubble Space Telescope's orbit and its significance?

Accepted Answer

Low Earth orbit at ~540 km altitude, above most of the distorting atmosphere

Answer

HST orbits at about 540 km altitude in low Earth orbit, placing it above the majority of atmospheric distortion and most UV-blocking layers, enabling sharp optical and UV imaging inaccessible from the ground.

Question 4

What is the International Space Station (ISS) primarily used for?

Accepted Answer

Microgravity research and scientific experiments in low Earth orbit

Answer

The ISS serves as a microgravity and space environment research laboratory where scientific research in biology, physics, materials science, and medicine is conducted continuously by crews from multiple nations.

Question 5

What did the LIGO observatory first detect in 2015?

Accepted Answer

Gravitational waves from two merging black holes

Answer

LIGO (Laser Interferometer Gravitational-Wave Observatory) detected the first gravitational wave signal on September 14, 2015 (announced February 2016), from two black holes spiraling together and merging 1.3 billion light-years away.

ASP - Astronomical Society of the Pacific Exam Practice Test

ASP - Astronomical Society of the Pacific Exam Practice Test

ASP Space Exploration and Modern Astronomy