Science

The massive GRB pulse on 9 October 2022 (ringed) was so bright it effectively blinded many observatories. Credit: NASA/ESA/CSA/STScI/A. Levan (Radboud University) Image Processing: Gladys Kober

Flash of space radiation that swept across Earth is brightest on record

Image of a distorted watch

Is it really possible to travel back in time?

Artist's impression showing how big a hypergiant star is in comparison to our Sun. Credit: M. Weiss/CfA

A guide to hypergiant stars, the behemoths of the cosmos

An image of Earth captured from the International Space Station by Samantha Cristoforetti, 20 March 2015. Back on Earth, Europeans enjoyed the sight of a partial solar eclipse. Credit: ESA/NASA

5 ways we can prove Earth is round, not flat

Artist's impression of a super Earth planet. Credit: Getty

What would happen to our Solar System if Earth were replaced by a super Earth?

A composite images showing the stages of a solar eclipse. Photo by Vishal Bhatnagar/NurPhoto via Getty Images)

How scientists can predict when the next eclipse will occur

The Sun is a main sequence star. But what does that mean? Credit: NASA/SDO

A quick guide to main sequence stars

Artist's impression of a dusty disc surrounding pulsar 4U 0142+61. Credit: NASA/JPL-Caltech

Could a planet orbit a dead star?

Hubble Space Telescope image of diffuse galaxy NGC 1052-DF2, a galaxy that's missing most, if not all, of its dark matter. Credit: NASA, ESA, and P. van Dokkum (Yale University)

If dark matter is ubiquitous, why do some galaxies seem to contain none at all?

A section of Planck’s snapshot of the primordial radiation that still pervades the cosmos today. Credit: ESA and the Planck Collaboration

How astronomers can observe the afterglow of the Big Bang

The Parker Solar Probe is one of many spacecraft studying the Sun. Credit: NASA, Johns Hopkins APL, Steve Gribben

How long would it take to get to the Sun?

Artist's impression of the evolution of our Universe. Credit: NASA/CXC/M.Weiss

Webb observations of distant galaxy allow astronomers to probe the early Universe

Binary proto-star ALMA, 4 October 2019 Credit: ALMA (ESO/NAOJ/NRAO), Alves et al.

How do astronomers measure the size and mass of stars?

Richard Goodrich Comet Madness podcast

Radio Astronomy Podcast Halley's Comet madness of 1910

Artist’s concept showing cutaway of Mars, along with the paths of seismic waves from two separate quakes in 2021. Credit: NASA/JPL-Caltech/University of Maryland.

Mars quakes allow scientists to determine composition of Red Planet’s core