Time is flying by on this busy, crowded planet as life changes and evolves from second to second. And yet the arc of the human lifespan is getting longer: 65 years is the global average, way up from just 20 in the Stone Age. Modern science, however, provides a humbling perspective. Our lives indeed even the life span of the human species is just a blip compared to the universe, at 13.7 billion years and counting. It now seems that our e... whole story

Since ancient times, we've looked into the night skies and wondered: How far do the stars stretch out into space? And what's beyond them?
In modern times, we built giant telescopes that have allowed us to cast our gaze deep into the universe. Astronomers have been able to look back to near the time of its birth. They've reconstructed the course of cosmic history in astonishing detail. From intensive computer modeling, and myriad clos... whole story

All across the immense reaches of time and space, energy is being exchanged, transferred, released in a great cosmic pinball game we call our universe.
To see how energy stitches the cosmos together, and how we fit within it, we now journey through the power scales of the universe From atoms nearly frozen to stillness. To Earth's largest explosions. From stars, colliding, exploding. To distant centers of power so strange and violent ... whole story

From a distance, our galaxy would look something like this. A flat spiral, some 100,000 light years across, with pockets of gas, clouds of dust, and about 400 billion stars rotating around the galaxy's center.
That center – bulging up and out of the galactic disk – is tightly packed with stars. Thick dust and blinding starlight have long obscured our vision into the mysterious inner regions of this so-called "bulge".
And yet, ... whole story