SN 1054 is this type of explosion that created the Crab Nebula, observed on July 4, 1054
Supernova
It's the call sign of the Air Force's C-32, used to carry the vice president, the first lady, & Congress & Cabinet members
Air Force Two
The TPS-L2 was the first model of this personal audio player that cost $200 when it debuted in the U.S. in 1980
The Walkman
The Mayans were using this by the 4th century; the concept of that number didn't make it to Europe until the 1200s or so
Zero
The theory of general relativity has been verified through experiments involving this innermost planet
Mercury
The exoplanet known as Janssen is thought to be a lava world; it orbits a star named for this Polish man who found out we orbit a star
Copernicus
In an F-15, Doug Pearson hit a target orbiting at 345 miles to become the only fighter pilot to shoot down one of these
A satellite
It may have been so long since you've sent a fax that you forgot that "fax" is short for this word
Facsimile
An ancient Hindu text calculates the square root of this integer as 1.4142156, which is correct to 5 decimal places
2
John Von Neumann pioneered game theory, starting by analyzing this game where bluffing is commonplace
Poker
The shape of a lenticular galaxy is similar to this type of galaxy (like our Milky Way) but lacks the swirling arms
Spiral
Described as a flying gas tank, in December 1986, the Ruttan Voyager managed to do this in 9 days without refueling
Circumnavigate the globe
Way back in 2009, President Obama fought to keep his personal phone made by this brand that didn't grow on bushes
BlackBerry
Their numerals weren't handy for arithmetic, so ancient Romans did most of their calculating on this device
An abacus
The third law of thermodynamics says entropy tends to reduce as the temperature approaches this 2-word state
Absolute zero
Coined in 1957, this vermicular vernacular describes a hypothetical tunnel in space-time
Wormhole
In October 1960 pianist Byron Janis was greeted in a Moscow concert hall by angry shouts of the name of this spy plane
U-2
Give a hand to this product from Joseph Enterprises that turned your lights on and off before Alexa did it for you
The Clapper
The Babylonians used base 60, which could be counted on 5 fingers of one hand & the 12 these on 4 fingers of the other
The knuckles
This British doc who developed germ theory was the son of a microscope pioneer also named Joseph
(Joseph) Lister
In one theory, a neutron star called a magnetar produces FRBs, fast bursts of these waves with a lower frequency than microwaves
Radio waves
The Sopwith Wallaby was built to win a £10,000 prize for the first plane to fly from Britain to here; but it crashed on Bali
Australia
Fuel injection has replaced this engine part whose name begins with a synonym for automobile
Carburetor
Some think Ancient Egyptians represented fractions using symbols from the eye of this falcon god
Horus
Legend says this Greek ran naked through Syracuse after discovering his buoyancy principle
Archimedes