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Is there anybody out there ? Are we really alone in the existence , or are outlander just patiently waiting for us to become advanced enough to be worth speaking to ?

There are so many mysteries about who or what might live among the principal , and whether they are advanced planet - hop civilizations or germ softly doing what microbes do on a nearby moonshine . But some questions are leisurely to serve .

A radio telescope with imaginary blue lines coming from it

Are you an expert on all things extraterrestrial, or should you just stick to sci-fi aliens?

Related:32 strange places scientist are look for stranger

Morescience quizzes

— lunar month landing place quiz : How quickly can you name all 12 Apollo spaceman that take the air on the moon ?

— Conspiracy possibility quiz : Test your noesis of unfounded beliefs , from categorical Earth to lounge lizard mass

— Black hole quiz : How supermassive is your knowledge of the universe ?

Rocket liftoff

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Einstein sitting at his desk

Artist�s impression of the exoplanet K2-18b

Coloured sagittal MRI scans of a normal healthy head and neck. The scans start at the left of the body and move right through it. The eyes are seen as red circles, while the anatomy of the brain and spinal cord is best seen between them. The vertebrae of the neck and back are seen as blue blocks. The brain comprises paired hemispheres overlying the central limbic system. The cerebellum lies below the back of the hemispheres, behind the brainstem, which connects the brain to the spinal cord

a rendering of a bed floating in the clouds

an illustration of a rod-shaped bacterium with two small tails

An artist�s interpretation of a dyson sphere

an illustration of a futuristic alien ship landing on a planet

Early life may have made an inhospitable Earth more habitable – and it could be happening on alien planets too, new research proposes.

an illustration of an alien planet

Two young lions (Panthera leo) in the Masai Mara National Park in Kenya.

Mount Vesuvius behind the ruins of pompeii.

Stonehenge, Salisbury, UK, July 30, 2024; Stunning aerial view of the spectacular historical monument of Stonehenge stone circles, Wiltshire, England, UK.

a painting of vikings at sea

Sunda island pit viper ( Trimeresurus insularis ) on a branch. Photo taken in Jakarta.

Stone-lined tomb.