122 Astronomy flashcards, ready to print. $2.99, once.
One payment buys the deck twice over: the printable PDF and every card unlocked to play online. Eight to a sheet, cut guides on every card, and the answer sheet already mirrored so a long-edge duplex print puts every answer on the back of its own question. 37 pages, US Letter, black and white. Grades 5–12.
Both halves, one price. The printable of this deck sells on its own for $1.29, and unlocking all 122 cards to play is $2.99. Bought one at a time that is $4.28. Here they are the same $2.99 purchase, so you save $1.29 — and there is one receipt to keep instead of two.
Includes every card unlocked to play online — $4.28 bought separately. One payment, no account, no renewal.
Same price, opens in the editor. Reword any card, add your own, print it your way.
Not sure yet? The first 30 cards of this deck are free to play and free to print, right now, with no email. Play the free 30 · Print the free 30
37 pages, and the backs are already right
Every front sheet is followed by its own back sheet with the rows reversed. Print double-sided, flip on the long edge, and answer number 7 is behind question number 7. Print a deck you built yourself, flip on the short edge, and every answer lands on the wrong card — which nobody finds out until sixty cards have been cut apart.
- 122 cards — counted out of the file, not rounded up
- Eight cards a sheet, with cut guides
- US Letter PDF, black and white, photocopier-friendly
- Print a set per student, every class, every year
The IAU recognises exactly 88 constellations — that is the whole sky, not a selection. With the eight planets and the core terms the deck comes to 122.
A specialist read every one of these 122 cards
Not a sample. Every card. That audit covered 5,420 cards across 30 decks and it changed things: every physics formula was rewritten to carry the conditions that make it true, and one deck on US civics was withdrawn from sale entirely rather than patched, because it taught a superseded edition of the citizenship test. You cannot buy that deck here. That is what checking looks like when somebody is accountable for the cards.
What 122 printed cards do that a screen does not
A phone deck is one card at a time. A printed deck is a pile you can split: the ones you know, the ones you nearly know, and the ones you keep missing. That third pile is the entire study session, and it is the thing a scrolling app hides from you.
- Print once, use all year. The licence covers a set per student, every class, every year.
- No device, no login, no data. Works in a cover lesson, on a bus, or at a kitchen table. Grades 5–12, filed under science.
- Change what you disagree with. Every card loads into the free maker on this site. Reword it, drop it, add your own, reprint.
Here are the first 30 cards, written out
Check them against your own textbook before you spend anything. If you do not like how they are worded, do not buy the deck — that is what this list is for.
- Mercury
- Smallest planet, nearest the Sun; no moons, an 88-day year
- Venus
- Hottest planet; thick CO₂ air, and it spins backwards
- Earth
- The only world known to host life, and the only one with stable liquid water on its surface; one moon
- Mars
- The red planet; rusty dust, two tiny moons, Olympus Mons
- Jupiter
- Largest planet; gas giant with the Great Red Spot
- Saturn
- Gas giant with bright ice rings; least dense planet
- Uranus
- Ice giant tipped on its side, so it rolls along its orbit
- Neptune
- Farthest planet; ice giant with the fastest winds known
- Andromeda
- Northern sky, autumn — brightest star Alpheratz (α And), level with variable Mirach (β And)
- Antlia
- Southern sky, spring — brightest star α Antliae; faint
- Apus
- Far southern sky — brightest star α Apodis
- Aquarius
- Zodiac, autumn — brightest star Sadalsuud (β Aqr)
- Aquila
- Equatorial, summer — brightest star Altair (α Aql)
- Ara
- Southern sky, summer — brightest star β Arae
- Aries
- Zodiac, autumn — brightest star Hamal (α Ari)
- Auriga
- Northern sky, winter — brightest star Capella (α Aur)
- Boötes
- Northern sky, spring — brightest star Arcturus (α Boo)
- Caelum
- Southern sky, winter — brightest star α Caeli; very faint
- Camelopardalis
- Northern circumpolar — brightest star β Camelopardalis
- Cancer
- Zodiac, late winter — brightest star Tarf (β Cnc)
- Canes Venatici
- Northern sky, spring — brightest star Cor Caroli (α CVn)
- Canis Major
- Southern sky, winter — Sirius (α CMa), brightest night star
- Canis Minor
- Equatorial, winter — brightest star Procyon (α CMi)
- Capricornus
- Zodiac, autumn — brightest star Deneb Algedi (δ Cap)
- Carina
- Far southern sky — Canopus (α Car), second-brightest star
- Cassiopeia
- Northern circumpolar, autumn — brightest star Schedar (α Cas); variable γ Cas can outshine it
- Centaurus
- Southern sky, spring — Rigil Kentaurus (α Cen), nearest star system
- Cepheus
- Northern circumpolar — brightest star Alderamin (α Cep)
- Cetus
- Equatorial, autumn — brightest star Diphda (β Cet); Mira (ο Cet) can rival it at a bright maximum
- Chamaeleon
- Far southern sky — brightest star α Chamaeleontis
Download all 122 cards — $2.99
The printable and every card unlocked to play — $4.28 bought separately, $2.99 together. One payment, no renewal, no account. Or take every deck: Study Pack, $11.99 a month — all 78 decks, all 7,178 cards, every printable, no ads. 5 single decks costs more than one month.
Includes every card unlocked to play online — $4.28 bought separately. One payment, no account, no renewal.
Same price, opens in the editor. Reword any card, add your own, print it your way.
Questions
- How do I print them double-sided?
- Double-sided, flip on the long edge. Every front sheet is followed by its own already-mirrored back sheet, so print them in the order they come and every answer lands on its own card.
- Can I edit the cards?
- Yes, and that is half the point. Once you own the deck, the "Buy & edit" button here opens all 122 cards in the free flash card maker on this site — reword a definition, delete the ones you do not teach, add your own, and print at anything from two to nine cards a page, rather than the fixed eight of the PDF.
- Can I print a set for every student?
- Yes. Personal and classroom licence: unlimited printing, every class you teach, every year you teach it. It does not cover reselling the file or passing it on to a colleague.
- What if I find a card that is wrong?
- Tell us and we fix it, and we publish what changed. We have withdrawn a whole deck from sale for being out of date rather than quietly patch it.
- Do I need an account?
- No. $2.99 at Stripe, the file downloads on the way back, and the deck stays unlocked in this browser.