BudgetGuessr project library

What the world’s biggest projects really cost

Compare published costs, timelines, project scale and original sources behind remarkable infrastructure and space missions.

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1733 projects

Artist's rendering, from NASA, of the MAVEN spacecraft in its in-flight configuration. Employing the use of a medium-sized spacecraft to orbit the planet mars, the specialised mission studies the chemistry of the planet's atmosphere, searching for evidence of past or present life on Mars and better understanding the planet's atmosphere and its history. The spacecraft also acts as a vital telecommunciations link between Earth and robotic landers / rovers on Mars.

Space mission · United States

$671 million

MAVEN

Illustration of the Mars 2020 spacecraft, encapsulated in its protective aeroshell and en route to Mars.

Space mission · United States

$2.7258 billion

Mars 2020

An artists' depiction of the OSIRIS-REx spacecraft.

Space mission · United States

$1.121 billion

OSIRIS-REx

Parker Solar Probe artist rendering Artist’s concept of the Parker Solar Probe spacecraft approaching the sun. Launching in 2018, Parker Solar Probe will provide new data on solar activity and make critical contributions to our ability to forecast major space-weather events that impact life on Earth.

Space mission · United States

$1.553 billion

Parker Solar Probe

Located approximately three miles from Middletown, Pennsylvania. Three Mile Island Nuclear Generating Station (51142893665).jpg

Energy · United States

$1.1 billion

Three Mile Island Nuclear Generating Station

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