Space mysteries Even though the density of interstellar space is billions of times lower than even our emptiest human-made vacuum chambers, it's not 100% percent empty.
Humanity's ability to track and monitor celestial cycles stretches back into prehistory, long before the invention of telescopes and astrolabes.
Astronomers developed a sophisticated computer simulation to explore whether or not strange star Betelgeuse may be the result of a merger between two smaller stars.
Space is a dangerous place, especially when it comes to high-energy particles, and intense solar activity can pose threats to people and technology on Earth.
The hellish super-Earth '55 Cancri e' may be constantly losing and re-growing its atmosphere, a new study of the planet's strange transit signals suggests.
We all know the universe contains a vast array of elements, ranging from light gases, such as helium, to heavy metals, like lead. But where did all of the elements come from?
When complete, the Square Kilometer Array Observatory (SKAO) will be the world's most powerful radio telescope — if SpaceX's Starlink satellites don't ruin its view.
Researchers have shared a radical new idea for how to put a spacecraft in orbit around Neptune: Use the thin atmosphere of Triton, Neptune's largest moon, to capture it.
Scientists worldwide are already using artificial intelligence and machine learning to sort through huge amounts of data, suggesting that the future of astronomy belongs to AI.
In the extreme hearts of neutron stars, fundamental particles are twisted into strange 'pasta' shapes that could reveal untold secrets about how dead stars evolve.
Humanity is slowly losing access to the night sky, and astronomers have invented a new term to describe the pain associated with this loss: 'noctalgia,' meaning 'night grief.'
The outer solar system contains a striking crime scene with a big mystery: How did Neptune get a moon like Triton?
As the search for "Planet Nine" in the outer solar system continues, new research suggests there may be an Earth twin buried deep within the frozen waste of the Kuiper Belt beyond Neptune.
Einstein's theory of relativity say black holes are 'bald', but a new tweak to his research may give the mysterious objects their long-sought 'hair.'
While there are hints that dark energy may be 'phantom,' its true nature remains frustratingly elusive, a new study reports.
Black holes seem to get all the attention. But what about their mirror twins, white holes? Do they exist? And, if so, where are they?
Whether you're a frequent jet-setter or a couch potato, you travel much more than you think, thanks the motion of the Earth, sun, Milky Way galaxy and more.
The modern scientific fields of astronomy and physics stretch back for centuries, and so naturally they've accumulated a lot of interesting names for objects, ideas, and phenomena.
Meet the 'bubbletrons' — theoretical particle accelerators that may have helped build the universe as we know it.
Pseudoscience is a practice that, from the outside, looks like science, but upon closer inspection, is revealed to be nothing but. And what makes a practice look like science?
Earth has held a stable orbit for over 4 billion years but what would happen if we changed Earth's orbit so to avoid the sun's violent demise?
Researchers have found a new way to measure dark energy — the mysterious force that is causing the expansion of the entire universe to accelerate — using data from our own cosmic backyard.
One astrophysicist is suggesting we remove Saturn's status as a gas giant, saying the planet tried but didn't quite make the cut.
Space mysteries Ever wondered how light slows down when passing through a material? Here we explore why the answer is not that straightforward.