What's beyond the known limits? What lies outside the boundary of the universe? The answer is — well, it's complicated.
SPACE.com invites experts in space exploration, science & technology to provide insightful commentary and informed perspective on news, current events, innovations, big ideas and ongoing research. Expert Voices includes Op-Ed analysis and opinion as well as interesting observations from the field and space exploration efforts around the world.
Finding more and more exoplanets to study has, as we might have expected, widened our understanding of what a planet is.
It’s not often that the sudden appearance of a new impact crater on the Moon can be predicted, but it’s going to happen on March 4, when a derelict SpaceX Falcon 9 rocket will crash into it.
Some astronomers say the collision is "not a big deal," but to a space archaeologist like me it's quite exciting.
Some people around the world believe our planet is flat. Here's the (surprising) truth about debating them.
With the Webb telescope, it will be possible to apply the mapping methods available to us to measure the three-dimensional variation of exoplanet atmospheres.
The successes notched by Webb, the biggest and most complex space telescope ever launched, reflect the grit and unity of thousands of people who worked together to place it in the heavens.
The Higgs boson particle could have kept our universe from collapsing within a larger multiverse, physicists say.
Astronomers have proposed lots of ideas to explain 'Oumuamua's odd characteristics, and we're unlikely ever to find out which one is correct.
Knowing if high-energy neutrinos and FRBs came from the same place on the sky would help explain the origins of both. But alas, they do not.
Does the simulation hypothesis offer a compelling argument, or is it just interesting food for thought? Let's find out.
How common are ice-covered planets like Hoth from "Star Wars," and might they be capable of hosting life? As usual, the answer is, it depends.
The Pacific Ocean Neutrino Experiment would turn a massive swath of the Pacific Ocean into nature's own neutrino detector.
Hiding beneath the outer layers of some planets, there may be something spectacular: a constant rain of diamonds.
New research has road-tested a way to spot some of the most voracious black holes of all, making it easier to find them buried deep in the hearts of distant galaxies.
If all goes according to plan, the James Webb Space Telescope, launched on Christmas Day 2021 after years of delays, will usher in a new era of astronomy.
The Standard Model explains the physics of how the world works. But in 2021, physicists started probing fundamental gaps in this long-established concept.
How do you test theories of the universe? By building gigantic supercomputers and simulating the evolution of the cosmos.