Science & Tech

Science & Tech

Explore the discoveries that reveal how the world works, alongside the technologies that extend, reshape, and sometimes challenge what’s possible.

round Earth messenger
All scientific theories are limited in scope, power, and application, being mere approximations of reality. That's why consensus is vital.
A tilted spiral galaxy gracefully tipped towards the viewer reveals a bright core and dark, dusty rings, set against the infinity of deep blue space.
When we see spiral galaxies, some are face-on, others are edge-on, but most are tipped at an angle. But which side is closest to us?
Composite image of spiral galaxy NGC 300. Left: wide view with area highlighted. Right: close-up of highlighted area. Bottom: magnified star field view. NASA and the Hubble Heritage Team.
The tiniest galaxies of all are the most susceptible to violence by their larger, bullying siblings. That's why we need them in isolation.
A person sits on a chair in a library setting, with bookshelves on either side and a white backdrop behind them.
1hr 17mins
"It's not that I don't think these problems are big or that they're urgent, but I can start to see that these problems are solvable."
A vivid image of a bright, colorful galaxy with swirling red, blue, and white clouds of gas and dust, where galaxies collide amid distant stars in the dark, expanding universe.
The Universe is expanding, and individual, bound structures are all receding away from one another. How, then, are galaxies still colliding?
A red star is at the center, with five orbiting paths marked by yellow dots, resembling exoplanets around the nearest single star, set against a starry night backdrop that illustrates a planetary system.
Barnard's star, the closest singlet star system to ours, has long been a target for planet-hunters. We've finally confirmed it: they exist!
A group of five men in suits pose with model rockets, showcasing their commitment to fundamental research. Beside them, an illustration depicts a space station orbiting Earth and the Moon, highlighting their visionary investment in space exploration.
Back in 1970, Sister Mary Jucunda wrote NASA, decrying large investments in science. A former Nazi's legendary response is still relevant.