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The constellation Capricornus the Sea-goat. How to see it, and how a sea-goat came to reside among the stars.
The Pacific’s Ring of Fire has 75% of the world’s active and dormant volcanoes, plus it’s prone to powerful earthquakes. Here’s why.
For both the Northern and Southern Hemispheres, full moons have names corresponding to calendar months or seasons of the year.
A philosopher argues that now is the time to figure it out, before we make the inevitable discovery of extraterrestrial life.
The constellation Virgo the Maiden fully returns to the early evening sky – with her feet planted on the eastern horizon – by early May.
An oddly textured region of southern Mars is not ice-covered today. Yet landforms here – and now certain minerals – are associated with under-ice volcanoes.
The announcement more than doubles Kepler’s confirmed exoplanets and suggests that, somewhere out there, we’ll discover another Earth.
Earlier this year, scientists presented evidence for a Planet Nine in the far outer solar system. Scientists think it exists, but – if so – how did it get there?
You’ve no doubt heard star names such as Polaris or Betelgeuse. But what about our star? Does the sun have a name, and if so what is it?
Alan Shepard became the first American in space on May 5, 1961. His suborbital flight took place just three weeks after the Soviet Union’s Yuri Gagarin orbited Earth once.
We knew that Saturn’s moon Titan had seas and lakes of liquid hydrocarbons, but their exact composition was unknown until recently.
Earth-like planets aren’t exclusively orbiting sunlike stars. Ultracool dwarf star TRAPPIST-1 hosts 3 potentially habitable planets.
They’re calling it a Manx comet, after the cats with no tails. It may have formed in the inner solar system and been ejected outward.
A month by month listing of major moon phases, conjunctions, oppositions, meteor showers and other important dates, from astronomer Fred Espenak.
It’s below sea level, with near-boiling water bubbling up from underground, high salt concentrations and toxic vapor. Yet life survives here.
The Curiosity rover has nearly crossed a stretch of the roughest terrain it’s seen during its 44 months on Mars. Scientists are monitoring the wear and tear on the rover’s wheels.
Visualize a vast reservoir of icy comets on the outskirts of our solar system. That’s what Jan Oort did in 1950, and why the Oort Cloud bears his name.
Video of a spectacular jellyfish that floated past NOAA’s ROV on April 24, 2016 in the Mariana Trench – the deepest oceanic trench on the planet.
This Hubble Space Telescope image reveals the first moon ever discovered around little Makemake, in the outermost region of our solar system.
New research suggests that dinosaurs were in decline tens of millions of years before the meteorite impact that finished them off.
Speed of light