As the name suggests, the $100 million Breakthrough Listen is a project to detect this type of signal from distant planets
Radio
In blackjack this alliterative phrase means betting your original amount again & getting just one more card
Double Down
Launched into space in 1961, Ham was one of these primates
A Chimp
Caffeine is one of these pick-me-up substances
Stimulant
If you bet on horses, you're familiar with the Win, Place, and _____ bet
Show
The area around a star where conditions are "just right" for life is called this zone, after a fairy tale girl
Goldilocks
You open an imaginary curtain to indicate the category is a play title in this game; first word...!
Charades
Hotfoot Teddy, a cub that survived a fire, was renamed this for a character who promoted fire safety & became his living symbol
Smokey Bear
It starts about 6 miles up from the ground
Stratosphere
I say! Old sport! Known as ponies, the horses used in this sport with chukkers have been known to play past age 25
Polo
A purported UFO crash in this southwest city in 1947 has spawned great interest & an annual festival
Roswell
The heads of 4 amphibious ungulates gobble up marbles in this Hasbro game
Hungry Hungry Hippos
The name of the Rough Collie dog who saved Timmy from the well
Lassie
This section once held the cheapest accommodations on passenger ships
Steerage
The horse's body is marked by a 4-star square in this constellation
Pegasus
A British project to develop a spacecraft capable of reaching a nearby star within 50 years is named for this mythic Greek flyer
Icarus
Not just a game, it is the proper collecting noun for this group of swinging animals.
Barrel of Monkeys
Dr. Penny Patterson taught Koko the gorilla this method of communication
Sign Language
Frankfurt's Börse, for one
A Stock Exchange
This horse has been developed in the Middle Eastern area of its name for centuries
Arabian
A theoretical basis of alien life is this 2nd most common element in Earth's crust; scientists have made enzymes bond it to carbon
Silicon
A "red snake" bet in this wheel game winds through 3 columns from 1 to 34
Roulette
Bucephalus carried this man on many of his 4th century B.C. conquests
Alexander The Great
This adjective means dark & hellish, like a journey to Hades
Stygian
According to Dio Cassius, this not-all-there Roman emperor planned to make his horse Incitatus a consul
Caligula