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Topic description:
Hard sci-fi is a branch of science fiction built strictly on real scientific laws and theories. Technological and physical plausibility matter greatly; speculation goes only as far as scientific frameworks allow. In these stories details have stakes: how a theory or device works can be central to the plot. Readers and viewers get not only adventure but a logically constructed imagined future.

Category description:
Aliens and UFOs explore the possibility of extraterrestrial intelligent life, including imagined civilizations, encounters, sightings, and stories of invasion or first contact. The topic is both scientific and cultural: what would it mean if we were not alone? In fiction it often becomes a metaphor for fear, hope, or humanity's place in the cosmos.

Aliens & UFOs category
Are Alien Signals Lurking Beyond the Known Radio Spectrum?
Aliens & UFOs
Are Alien Signals Lurking Beyond the Known Radio Spectrum?
Human Neurons Show Surprising Computational Power
Aliens & UFOs
Human Neurons Show Surprising Computational Power
Exploring Extraterrestrial Life and Alien Civilizations
Aliens & UFOs
Exploring Extraterrestrial Life and Alien Civilizations
Debunking Myths About Aliens and UFOs
Aliens & UFOs
Debunking Myths About Aliens and UFOs

Space today

Upcoming launches

Space weather

Kp index 1.7 (quiet)

Aurora chance low

ISS now

From Washington 13423 km

Altitude 438 km

-51.59°, -169.26°

Washington sky

Sunrise 06:16

Sunset 20:10

Moon waning crescent (16% illumination)

Mars now

Earth–Mars distance 293.5 million km

Curiosity sol 4976 (2026-08-05)

Temperature -72…-5 °C

Pressure 781 Pa

Sky Sunny

UV index Moderate

Season Martian month 12

Mars Perseverance Sol 1943: Left Navigation Camera (Navcam)

Mars Perseverance Sol 1943: Left Navigation Camera (Navcam)

Astronomy picture

Contemplating the Sun

Contemplating the Sun

Sources: Launch Library, NOAA, Open Notify, NASA (Curiosity/Perseverance), Open-Meteo, IP geo