Does outer space end – or go on forever?
Astronomers know a lot about what’s in outer space – and think it’s possible it never ends.
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Pairing lasers with microwaves makes mind‑bogglingly accurate electronic clocks – a potential boon for GPS, cell phones and radar
Researchers have made some of the most accurate clocks imaginable in recent years, but the trick is harnessing those clocks to electronics. Using lasers to tune microwaves bridges the gap.
Is our Milky Way galaxy a zombie, already dead and we don’t know it?
Extragalactic astrophysicists want to know how and why galaxies stop forming stars, change their shape and fade away. With help from citizen scientists, they’re figuring it out.
From a new flagship space telescope to lunar exploration, global cooperation – and competition – will make 2026 an exciting year for space
The US, China, India, Europe and Japan all have exciting missions on the horizon in 2026. Many of them are collaborative feats.
Revealed for the first time: map sheds light on dark matter that binds the universe together
Dark matter’s mysteries are being steadily unravelled by new studies of remote galaxies.
From black holes to dark matter, an astrophysicist explains
Katherine Mack, astrophysicist at the University of Melbourne, answered questions posed by the public on Reddit. The Conversation has curated the highlights. Dark Matter How do you explain dark matter…
Why do astronomers believe in dark matter?
Why do astronomers believe there’s dark matter when it cannot be directly detected? Let’s look at the evidence, and see what dark matter’s presence means for our universe.
We need to consider alternatives to dark matter that better explain cosmological observations
Cosmology does not need dark matter or dark energy in an expanding universe that allows the constants of nature to evolve, and light loses energy as it travels vast distances.
We don’t know if dark matter exists. So why do astronomers keep looking?
A comparison of star-forming galaxies suggests, surprisingly, that dark matter and visible matter do interact – taking us closer to understanding what keeps the galaxies together.
How do atoms form? A physicist explains where the atoms that make up everything around come from
Almost everything on Earth is made up of atoms, but where do these fundamental building blocks come from?
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