How do we see things in space?

• TRAPPIST-1: "Presenting humanity with many opportunities to study terrestrial worlds beyond our solar system" (TRAPPIST-1)
• TRAPPIST-1 (Wikipedia)
• What is astronomy? (Space.com)
• How do (visual) telescopes work? (How Stuff Works, Science)
• Galileo Galilei (Wikipedia)
• Four of Jupiter's 67 moons, Io, Europa, Ganymede & Callisto, are known as the 'Galilean' moons (Wikipedia)
• Galilieo got in big trouble from the church for saying that the Earth was not the centre of everything (Wikipedia)
• Galileo gives an eternal bird to the church: His middle finger is displayed in a jar in Florence (Wikipedia)
• The Galilean moons have regular orbits, but most of Jupiter's moons have orbits that are a bit random (Wikipedia)
• The electromagnetic spectrum (Cosmos)
• The electromagnetic spectrum & telescopes (NASA)
• It takes more than one kind of telescope to see the light (NASA)
• Observatories across the electromagnetic spectrum (NASA)
• A list of all the space telescopes (Wikipedia)
• A list of the oldest observatories on Earth (Wikipedia)
• How do telescopes let us see so far into space? (BBC, Science)
• How scientists get data from the universe, process it, archive it & analyse it (NASA)
• Hubble Space Telescope: Detects near infrared, visible & ultraviolet light (Wikipedia)
• Hubble Site (NASA)
• A fresh take on the Horsehead Nebula (Hubble Space Telescope, ESA)
• Making images out of different kinds of raw data from space (NASA)
• The Hertzsprung-Russell diagram (CSIRO, Australia Telescope National Facility)
• The Hertzsprung-Russell diagram (Cosmos)
• Main sequence stars (CSIRO, Australia Telescope National Facility)
• Main sequence lifetime (Cosmos)
• Detecting other worlds: The wobble method (SETI)
• How can you tell between different types of stellar wobble? (The Naked Scientists)
• "The Sun is a G-type main-sequence star (G2V) based on its spectral class, & is informally referred to as a yellow dwarf" (Wikipedia)
• Spectra & what they can tell us (NASA)
• Astronomical spectroscopy (Wikipedia)
• What is a stellar nursery? (wiseGEEK)
• An image of a stellar nursery (NASA)
• ‘Space beacons’ reveal the Milky Way’s very old core (Space Answers)
• A timeline of the TRAPPIST-1 discoveries & the telescopes involved (TRAPPIST-1)
• The James Webb telescope (NASA)
• Kepler Space Telescope: Exoplanet hunter (Space.com)
• Belgian astronomers celebrated the discovery of the TRAPPIST-1 exoplanet system with Trappist beer (Wikipedia)
• 5 ways to find a planet (NASA)
• The planets orbiting TRAPPIST-1 were discovered using the 'transit method' of detection (TRAPPIST-1)
• The planets orbiting TRAPPIST-1 are quite close to the star & three are in the habitable zone (Wikipedia)
• What is the Goldilocks Zone & why does it matter in the search for ET? (ABC, Australia)
• Search for extraterrestrial intelligence (SETI Institute)
• SETI has tried to see if any radio signals are coming from TRAPPIST-1 (Wikipedia)
• Where is the search for extraterrestrial life up to? (ABC, Australia)
• The billion-year technology gap: Could one exist? (The Daily Galaxy)
• Advanced alien civilizations rare or absent in the local universe (Phys.org)
• The hydrogen 21 cm line (HyperPhysics)
• A proper paper about 21cm intensity mapping: "Using the 21 cm line, observed all‐sky & across the redshift range from 0 to 5, the large scale structure of the universe can be mapped in three dimensions" (Cornell University Library, Peterson JB et al.)
• The Very Large Telescope (Wikipedia)
• The Extremely Large Telescope (Wikipedia)
• The Overwhelmingly Large Telescope (Wikipedia)
• The Deep Space Network (NASA, JPL)
• Canberra has several telescopes that are part of the Deep Space Network (NASA)
• The Square Kilometre Array Telescope (SKA, Australia)
• SKA telescope to generate more data than entire internet in 2020 (Computer World)
• SKA amazing facts (SKA)
• "Astrology is the mass cultural delusion that the apparent position of the sun & planets relative to arbitrarily defined "star signs" at the time of your birth somehow affects your personality & future" (Rational Wiki)
• Astrology is still bullshit & the universe doesn't care about you (Gizmodo)
• Flecks of extraterrestrial dust, all over the roof: An amazing article about a Norwegian Jazz musician who collects space dust (The New York Times)
• Where are you from? Send us a postcard! Strange Attractor, c/ PO Box 9, Fitzroy, VIC 3065, Australia

Corrections

• TRAPPIST-1 is thought to be an ultra-cool dwarf, not a brown dwarf (Wikipedia)
• The James Webb telescope will detect infrared energy, not radio (NASA)
• Johnny meant 'wavelength' when talking about the hydrogen 21 cm line, not 'frequency' (HyperPhysics)