Science & TechFact

A probe from 1977 is still phoning home.

Voyager 1 launched in September 1977, flew past Jupiter and Saturn, and in 2012 became the first human-made object to leave the heliosphere. It is now about 26 billion kilometres away. A radio signal takes almost 24 hours to reach Earth. Power comes from a radioisotope generator that loses a few watts every year.

Useful: It carries the Golden Record with greetings in 55 languages, just in case someone finds it.

Source: en.wikipedia.org

NasaRaumfahrtWeltall

Difficulty:

Related cards

Astronauts on the ISS see 16 sunrises a day.The International Space Station orbits about 400 kilometres up at roughly 27,600 km/h. One lap …
A solid that is more than 99 percent air.Aerogel is made by removing the liquid from a gel without letting its skeleton collapse. What …
The gold in your ring was forged when dead stars collided.Stars fuse elements in their cores only up to iron. Heavier ones like gold, platinum and uranium …
The sunlight on your skin is eight minutes old.Light travels through vacuum at exactly 299,792,458 metres per second. That number isn't measured …
The Moon drifts 3.8 centimetres farther away every year.Apollo astronauts left laser reflectors on the Moon. Since 1969, observatories have fired laser …
A teaspoon of this weighs more than a mountain range.When a massive star explodes, its core can collapse into a neutron star: about 1.4 solar masses …
The solar system's tallest mountain is too flat to admire.Olympus Mons on Mars rises about 22 kilometres, roughly two and a half times the height of Everest. …
The first black hole photo needed an Earth-sized telescope.In 2019 the Event Horizon Telescope revealed the shadow of the black hole in galaxy M87, 55 million …

Keep reading

This card belongs to the topic Science & Tech. Every card is short, cites a source and can be saved – due ones come back by themselves later.

About Doomlearn · Projects · Legal notice · Privacy · Terms