Before humans, the Soviet Union and the United States sent animals—including apes, dogs, and cats—to space during the Space Race.

Before humans, the Soviet Union and the United States sent animals—including apes, dogs, and cats—to space during the Space Race.

The animals that paved the way for space travel

The history of animals in space exploration is often overlooked. Before humans first made their way to space in 1961, fruit flies, primates, and canines preceded us. Watch this video for a further appreciation of the contributions and sacrifices made by animals for scientific progress.

What was the Space Race?

​Want to know more about the Space Race? This article from the National Air and Space Museum dives into this intense Cold War competition between the U.S. and the Soviet Union. Explore how the race transitioned from military rivalry to a quest for space exploration dominance, leading to milestones like the first satellite, Sputnik, and the iconic Apollo 11 Moon landing.

The USSR's space program achieved many historic firsts in the Space Race

Soviet scientists launched the first satellite, sent the first human into orbit, and carried out early spacewalks—milestones that gave the USSR a decisive early lead in the Space Race and reshaped global competition in science and technology.

Sputnik 1—launched in 1957—was Earth's first artificial satellite

Its launch accelerated US investment in the Space Race amid fears the Soviet Union had the technology to launch intercontinental nuclear warheads. It would be followed by Sputnik 2, which carried the first living being—a dog named Laika—to orbit.

The space race ended with a handshake in orbit in 1975

On July 17, 1975, American and Soviet astronauts docked their spacecraft during the Apollo–Soyuz mission, symbolically ending the space race and marking the first joint spaceflight between Cold War rivals.

NASA was founded in response to early Soviet space achievements

Although starting behind in the Space Race in 1958, NASA became a global leader in humanity's exploration of space with the Apollo program, which placed astronauts on the moon. Since then, it has been responsible for the construction of multiple telescopes, the International Space Station, and development of the Artemis program to return humans to the Moon before eventually reaching Mars.

Who’s in space right now?

Hundreds of people (and a few animals) have been to space since the first creatures flew past the Kármán line in 1947. There are a handful of astronauts aboard the International Space Station at any time, while others may be cresting space in...

In 2001, Pizza Hut became the first company to deliver pizza to space

The chain paid the Russian space agency nearly $1M for the promotional stunt, which saw a Russian cosmonaut eat the pizza on video. Other unusual objects to make it to the International Space Station include a gorilla suit, an espresso machine, and several musical instruments.

The Apollo program built US space technology and showcased its Cold War dominance

Beyond landing humans on the moon for the first time, Apollo served to advance rocket engineering and guidance systems through crewed and uncrewed missions. By Apollo 15, the Lunar Roving Vehicle was developed and driven on the moon.

The first chess game in space ended in a draw in 1970

Soviet cosmonauts Andriyan Nikolayev and Vitaly Sevastyanov played a game of chess against mission control while orbiting Earth aboard Soyuz 9 in 1970. The match ended in a draw—the first recorded game in space.

A look at the foods eaten by astronauts during and after the space race

After John Glenn became the first American to demonstrate that eating in space was possible by eating apple puree out of a tube, meals were prepared for astronauts to meet an approximately 2,800-calorie-a-day requirement via freeze-dried foods. Meal quality gradually improved throughout the Apollo program, including the Apollo 8 crew's nondehydrated Christmas meal in 1968.

The US space program was built on former Nazi expertise through Operation Paperclip

After WWII, the US secretly recruited over 1,600 German scientists, including ex-Nazis like Wernher von Braun. They repurposed V‑2 rocket technology to create NASA’s core capabilities—pivotal in the Saturn V and Apollo missions.

Read about every visitor to the International Space Station

The US has sent the most astronauts to the ISS, with 170 visitors, followed by 64 from Russia, 11 from Japan, and nine from Canada. American astronauts Michael E. Lopez-Alegria and Peggy A. Whitson and Russian cosmonauts Yuri Malenchenko and Fyodor Yurchikhin have the most trips, with five each.

The X-37B is America's secretive long-duration space plane

The second iteration of the Space Race is already heating up between the US and China, with both countries working to develop technologies for space superiority. Among those, the X-37B has stoked fears in Beijing that the vehicle could one day deliver powerful weapons from space.

Has anyone had sex in space?

Reproduction is a basic human function, and while we've spent decades in space, no research has been done into the process. With many discussing the possibility of human-occupied bases on the moon, Mars, and more, understanding how sex works outside...

Apollo astronauts left items in the moon's 'toss zone,' including golf balls, family photos, and bags of human waste, to make room for lunar rocks.

The US and the USSR each boycotted Olympic Games during the Cold War

The US led a boycott of the 1980 Moscow Olympics over the Soviet invasion of Afghanistan. In retaliation, the USSR and its allies skipped the 1984 Los Angeles Games.

Hear the story of a cosmonaut stranded in space after the Soviet Union collapsed

When the USSR dissolved in 1991, cosmonaut Sergei Krikalev was still aboard a space station—forcing him to remain in orbit for months longer than planned. This limited podcast series recounts the event, hosted by astronaut and pop star Lance Bass.

Astronauts have repaired genetic damage in space using CRISPR—a molecular tool that can make precise changes to DNA and is used in single-celled organisms to attack invasive viruses.

Pets of ancient Greece: crickets and ferrets and hedgehogs, oh my!

Ancient Greece left behind literature and art in which geese, doves, dogs, and the like are seen keeping people company or holding vigil for their return. Were these considered pets as we understand the term today, and where did ancient Greeks fall on the timeless question of cats versus dogs? Did Odysseus let Argos onto the sofa? This magazine article explores evidence of pets and their treatment in ancient Greece.

At one point in the 20th century, more than a million Americans had pet monkeys

This choice to domesticate monkeys proved to be trickier than expected, and thus isn't a very appealing option for humans. Monkeys breed more slowly than other animals, while also being susceptible to diseases and challenging to contain.

'The arts and sciences are avatars of human creativity. It's our attempt to influence things, the universe internal to ourselves and external to us.'

- Mae Jemison (1956-present), the first Black woman in space

Scientists have proposed using lasers to push space trash into Earth's atmosphere

Such projects would allow most debris to burn up and no longer pose a risk to active satellites, telescopes, and astronauts on space stations. Enacting these plans would require substantial investments from private and governmental space agencies and overcoming international laws that prevent the removal of another country's space equipment.

SpaceX was built to achieve Elon Musk's vision of making humans an interplanetary species

Learning quickly from early Falcon rocket failures and clashes with vendors and safety regulators, the company has focused on reusability as a first step to reaching Mars and is backed by NASA funding to do so.

US federal researchers are blocked from putting certain human cells in animals

In 2015, US policymakers put a halt to any government-funded work that would insert human stem cells into animals. The reasoning was that human cells might spread through the animal's body and perhaps to its brain, blurring the line between humans and nonhumans. The ban remains in place today even as gene-edited pig parts are being placed in humans.

Humans are more genetically similar to cats than to dogs

While humans are not closely related to either cats or dogs from an evolutionary standpoint, scientists find that human and cat chromosomes are organized more similarly to each other than human and dog chromosomes, making cats a better model for studying human diseases.

A modified Boeing 747 ferried Space Shuttles across the country

NASA's Shuttle Carrier Aircraft—two specially modified Boeing 747s—were used to transport Space Shuttles between landing sites and launch facilities, playing a critical logistical role throughout the shuttle program.

Explore fun facts from the USPS, including unique post office buildings, a stamp that traveled past Pluto, and more.

Experimental hantavirus vaccines and therapies, still under development, have long been funded by the US military.

Watch how viruses like Ebola can spill over from animals to humans—and vice-versa.

The history of many kitchen appliances involves unexpected discoveries and applications, including wartime radar turned hamster defroster and replacing an 'ice king' with heat-stealing boxes.

Track the location of the Voyager probes, currently between 13 and 15 billion miles away from Earth.

The United States has had a tumultuous relationship with Cuba since its 1959 revolution, highlighted by a nuclear crisis and a decades-long trade embargo.

Larger animals like giraffes, elephants, and blue whales have developed a unique defense against cancer, a phenomenon known as Peto's Paradox

The American cockroach is actually from Africa, an apparent hitchhiker aboard ships carrying enslaved people, with evidence suggesting the bug may have arrived in the New World as early as the 1600s.

The first image of a black hole was captured by creating an Earth-sized virtual observatory from a network of eight radio telescopes.

Crows are believed to have intelligence on par with a seven-year-old child and demonstrate complex behaviors, from problem-solving with tools to recognizing human faces.

In 1984, Operation Smash Hit intentionally crashed a 239-ton train into a nuclear waste canister at 100 miles per hour to prove the canister's safety, which remained completely intact and lost just 0.29 of its 100 pounds of pressure.

Some Pokémon have been named after real and fictional organisms, while some real-world species have been named after Pokémon, such as Chilicola charizard and Binburrum zapdos.

Famed poet TS Eliot rejected the manuscript for George Orwell's political fable 'Animal Farm,' writing that its criticism of authoritarianism was not 'the right point of view.'

See how Budweiser's famous Clydesdales spend their days at Warm Springs Ranch, where roughly 70 to 80 of the beer brand's giant horses can be found at any given time.

SpaceX's S-1 or 'prospectus' revealed many previously unknown details about the company, including its unprofitability despite doing $18.7B in revenue in 2025, exactly how many voting shares Elon Musk will have in the company (roughly 85%), and more.

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Long before Major League Baseball began allowing instant replay for balls and strikes, an umpire reluctantly used the technology to determine whether a hit was a home run, a move that inadvertently ushered in a new era for the sport.

While atoms are normally made of protons, neutrons, and electrons, exotic ones have been built with antimatter—alternate versions of normal matter that live for fractions of a second and are about a billion times as rare.

The Russia-Ukraine conflict is the largest ground war in Europe since World War II in terms of casualties, forces mobilized, and displacement of civilians.

'Shogun,' a 1980s TV series, helped popularize sushi in the US by stimulating an American interest in Japanese culture.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

In preparation for this weekend's Eurovision finale, which is something like the World Cup of pop music, here's a young Céline Dion performing (for Switzerland?) at the 1988 competition.