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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.
It won’t be easy to catch Mercury near the August 4 young moon. But if your sky is clear all the way to the western horizon after sunset, try it!
A philosopher argues that now is the time to figure it out, before we make the inevitable discovery of extraterrestrial life.
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?
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.
Results from the Venus Express spacecraft, obtained when – in the craft’s final months – it surfed the dense atmosphere of Venus.
Iron-60 found in moon rocks supports an earlier finding that – 2 million years ago – a supernova exploded only 300 light-years away.
A new Hubble image captures – in stunning clarity – the Bubble Nebula, a cloud of gas and dust illuminated by the brilliant star within it.
Researchers say they’ve cracked the secrets of the monarch butterfly’s internal compass.
Equinox moon and Jupiter next few days
Triple lightning hits the sea