Under constructionWe are still building the catalogue. Prices are not being tracked yet, and many sections are still being written — what is here is real, there is just not much of it.

Section 22 · Collectibles

Space & science

The essentials

Checked against Astronomy.

Celestial Objects

planets, moons, stars, nebulae, galaxies, meteoroids, asteroids, and comets

Cosmic Phenomena

supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation

Amateur Astronomy

active role in discovering transient events like new comets

Astrology Distinction

belief system not supported by physics unlike astronomy

Term Usage

"Astronomy" and "Astrophysics" are broadly synonymous in modern usage

Prehistoric Evidence

Stonehenge, Nebra sky disc, and Nabta Playa alignment

Ancient Devices

Antikythera mechanism (c. 150–80 BC) and the astrolabe

Ptolemaic System

geocentric model used for over a thousand years

Islamic Astronomy

observation of the Andromeda Galaxy and naming of stars

Heliocentric Model

proposed by Aristarchus (3rd century BC) and Copernicus

Telescope Advancements

Galileo's discovery of Venus phases and Milky Way components

Spectral Analysis

identification of elements via Fraunhofer’s dark lines