NASA Science

62 facts cite this source

Space Solar System

A day on Venus is longer than its year

65 sec read

Earth & Climate Geology

Alfred Wegener proposes continental drift

45 sec read

History Modern

The first crewed Moon landing happened on July 20, 1969

75 sec read

Space Space Exploration

Apollo 11 launched on its way to the Moon

45 sec read

Space Space Exploration

Apollo 12 launched and was struck by lightning twice

45 sec read

Space Stars & Galaxies

Skywatchers logged the supernova that became the Crab Nebula

45 sec read

Space Stars & Galaxies

Betelgeuse is so big that if it replaced the Sun it would swallow the planets out to Jupiter

70 sec read

Nature & Animals Evolution

A 10-kilometre asteroid ended the age of dinosaurs

70 sec read

Space Solar System

Comet Hale-Bopp was discovered far beyond Jupiter

50 sec read

Space Cosmology

The afterglow of the Big Bang was discovered by accident in 1965

75 sec read

Nature & Animals Evolution

Darwin's Beagle reached the Galapagos Islands

45 sec read

Earth & Climate Oceans

Earth has only one ocean — and it's mostly unexplored

70 sec read

Earth & Climate Geology

Hillary and Tenzing pitch the highest camp in history for their Everest bid

50 sec read

History Archaeology

Hiram Bingham reached Machu Picchu and brought it to world attention

45 sec read

Earth & Climate Geology

Hillary and Tenzing become the first to reach the summit of Mount Everest

50 sec read

Space Space Exploration

Hubble stared at an empty speck of sky and found 3,000 galaxies

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Space Space Exploration

Lunar Orbiter 1 took the first photo of Earth from the Moon

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Space Space Exploration

Mariner 4 launched toward the first close-up photos of Mars

45 sec read

Space Solar System

Monks may have witnessed a lunar impact

50 sec read

Space Space Exploration

NASA launched the Curiosity rover toward Mars

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Space Space Exploration

NASA's Spirit rover lands on Mars

45 sec read

Space Solar System

New Horizons made the first flyby of Pluto

45 sec read

Space Astrophysics

Nothing can escape a black hole's event horizon, not even light

70 sec read

Space Space Exploration

Pioneer 10 became the first craft to leave the planets behind

45 sec read

Space Solar System

Pluto was reclassified as a dwarf planet

45 sec read

Geography Borders & Maps

Russia and the United States are less than 4 km apart

70 sec read

Nature & Animals Marine Life

Sharks are older than trees, dinosaurs, and Saturn's rings

65 sec read

Space Space Exploration

Surveyor 1 made America's first soft Moon landing

40 sec read

Society & Economy Trade

The Erie Canal opened, transforming American trade

50 sec read

Space Space Exploration

The Moon's hidden face was photographed for the first time

45 sec read

Space Solar System

The first known interstellar object, 'Oumuamua, was discovered

50 sec read

Society & Economy Politics & Law

The first Labor Day parade was held in New York City

45 sec read

Space Space Exploration

The Huygens probe lands on Saturn's moon Titan

50 sec read

Earth & Climate Weather & Climate

The Sahara was green just a few thousand years ago

80 sec read

Space Space Exploration

Venera 7 sent the first signal from the surface of another planet

45 sec read

Space Stars & Galaxies

The Whirlpool Galaxy was discovered

45 sec read

Space Solar System

Triton, Neptune's largest moon, was found just 17 days after the planet

45 sec read

Space Stars & Galaxies

More than half of all stars come in pairs or groups, not alone like our Sun

70 sec read

Space Solar System

Venus is hotter than Mercury despite being farther from the Sun

70 sec read

Space Space Exploration

Voyager 1 became the first spacecraft to leave the heliosphere

80 sec read

Space Space Exploration

Voyager 1 made its closest approach to Saturn

45 sec read

Space Space Exploration

Voyager 1 takes the 'Pale Blue Dot' photo

50 sec read

Space Space Exploration

Voyager 2 launched toward the outer planets

40 sec read

Earth & Climate Ecosystems

The Amazon makes its own rain — and kick-starts its own wet season

45 sec read

Space Astrophysics

Time runs slower near a black hole

50 sec read

Space Solar System

Saturn's moon Enceladus sprays an ocean into space through icy geysers

50 sec read

Space Solar System

Jupiter's Great Red Spot is a storm wider than Earth that has raged for centuries

50 sec read

Earth & Climate Natural Disasters

The tallest wave ever recorded towered higher than the Empire State Building

45 sec read

Space Solar System

Mercury is slowly shrinking and wrinkling its own crust

50 sec read

Space Stars & Galaxies

The Milky Way is on course to collide with the Andromeda galaxy in about 4 billion years

50 sec read

Space Solar System

Mars hosts Olympus Mons, the tallest volcano in the Solar System

50 sec read

Space Cosmology

Everything we can see is only about 5% of the universe

45 sec read

Space Space Exploration

The Parker Solar Probe is the fastest thing humans have ever built

50 sec read

Space Stars & Galaxies

Red dwarfs are the most common stars in the Milky Way, about three-quarters of them

50 sec read

Space Solar System

Saturn is the only planet light enough to float on water

50 sec read

Space Space Exploration

The first Mars rover was the size of a microwave oven

50 sec read

Space Stars & Galaxies

The Sun's core is about 15 million degrees Celsius, hot enough to fuse hydrogen into helium

45 sec read

Space Astrophysics

Today's sunshine began its journey tens of thousands of years ago

50 sec read

Earth & Climate Natural Disasters

In deep water a tsunami races along as fast as a jet airliner

45 sec read

Space Cosmology

The universe's expansion is speeding up, not slowing down

45 sec read

Space Cosmology

The universe is about 13.8 billion years old

50 sec read

Space Solar System

Venus spins backwards

25 sec read