Stars, planets and the distances that make the universe so hard to cross.
10 articles tagged Astronomy
The universe is approximately 13.8 billion years old, yet the observable cosmos stretches around 93 billion light-years across. But where does it end? Discover what astronomy reveals about the edge of the universe—and what remains unknown.
Why does the universe exist? Are we alone in the cosmos? What happens when consciousness disappears? Science has transformed our understanding of reality, yet some of its biggest questions remain open. Explore ten mysteries at the edge of human knowledge.
Humanity dreams of exploring the universe, but cosmic expansion may impose a limit we can never overcome. Distant galaxies can become permanently unreachable, and future astronomers may struggle to uncover cosmic history.
What happens if you fall into a black hole? Discover the event horizon, gravitational time dilation, spaghettification, and the difference between stellar-mass and supermassive black holes.
Imagine waking up to a world without sunlight. Earth would lose its warmth, plants would stop growing, ecosystems would begin collapsing, and humanity would face an extraordinary fight for survival.
Before Sputnik launched humanity into the Space Age, astronomers were already photographing the night sky. Now researchers are studying mysterious points of light hidden in those old photographs. Could they be evidence of unknown objects—or simply artifacts hiding in the data?
Voyager 2 spent more than 40 years traveling toward the edge of the Sun's influence. When it finally crossed into interstellar space, its instruments revealed a strange boundary, unexpected plasma conditions, and a transition far more complicated than a simple edge.
Science fiction has imagined civilizations creating life on other worlds. Explore synthetic biology, extremophiles, planetary protection and the possibility of deliberately creating ecosystems beyond Earth.
HOPS-315 is giving astronomers a look at the moment when gas around a young star begins turning into the solid material that can eventually become planets.
Even a spacecraft at 20% of light speed would still face years of travel, deadly dust, and the chance that the nearest stars have nothing worth settling.
