The US wants a ‘Space Force’ to be the sixth branch of the US military. Shutterstock/Carlos Romero

The US plan for a Space Force risks escalating a ‘space arms race’

The US plan for a Space Force risks escalating a ‘space arms race’ The US wants a ‘Space Force’ to be the sixth branch of…

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The motion of the S2 star passing through the extreme gravitational field near the supermassive black hole in the centre of the Milky Way. European Southern Observatory

Why starlight turns red escaping from black hole at heart of Milky Way

Why starlight turns red escaping from black hole at heart of Milky Way eso a CROP. Indranil Banik, University of St Andrews For the past…

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Colorful view of universe as seen by Hubble in 2014. NASA, ESA, H. Teplitz and M. Rafelski (IPAC/Caltech), A. Koekemoer (STScI), R. Windhorst (Arizona State University), and Z. Levay (STScI)

The universe’s rate of expansion is in dispute – and we may need new physics to solve it

The universe’s rate of expansion is in dispute – and we may need new physics to solve it Colorful view of universe as seen by…

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Space tourism economics – financing and regulating trips to the final frontier

Space tourism economics – financing and regulating trips to the final frontier Shutterstock Loizos Heracleous, Warwick Business School, University of Warwick American engineer and businessman…

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Using two of the world’s most powerful space telescopes — NASA’s Hubble and ESA’s Gaia — astronomers have made the most precise measurements to date of the universe’s expansion rate. This is calculated by gauging the distances between nearby galaxies using special types of stars called Cepheid variables as cosmic yardsticks. By comparing their intrinsic brightness as measured by Hubble, with their apparent brightness as seen from Earth, scientists can calculate their distances. Gaia further refines this yardstick by geometrically measuring the distances to Cepheid variables within our Milky Way galaxy. This allowed astronomers to more precisely calibrate the distances to Cepheids that are seen in outside galaxies. Credits: NASA, ESA, and A. Feild (STScI)

Hubble and Gaia Team Up to Fuel Cosmic Conundrum

Hubble and Gaia Team Up to Fuel Cosmic Conundrum Using the power and synergy of two space telescopes, astronomers have made the most precise measurement…

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Artist’s rendering of a Mars artificial gravity transfer vehicle. NASA

Method of making oxygen from water in zero gravity raises hope for long-distance space travel

Method of making oxygen from water in zero gravity raises hope for long-distance space travel Artist’s rendering of a Mars artificial gravity transfer vehicle. NASA…

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Triple star system involving a pulsar suggests Einstein was right. Kevin Gill/Flickr, CC BY-ND

Free-falling dead stars show that a cornerstone of physics holds up

Free-falling dead stars show that a cornerstone of physics holds up Triple star system involving a pulsar suggests Einstein was right. Kevin Gill/Flickr, CC BY-ND…

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What could a ‘relativistic camera’ capture on the way to Alpha Centauri? ESA/NASA, CC BY

Observing the universe with a camera traveling near the speed of light

Observing the universe with a camera traveling near the speed of light What could a ‘relativistic camera’ capture on the way to Alpha Centauri? ESA/NASA,…

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image of a hall thruster and plume. Credit: NASA

NASA Will Seek Partnership with US Industry to Develop First Gateway Element

NASA Will Seek Partnership with US Industry to Develop First Gateway Element As part of the agency’s Exploration Campaign, NASA’s Gateway will become the orbital…

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When galaxies align. NASA

How we proved Einstein right on galactic scales – and what it means for dark energy and dark matter

How we proved Einstein right on galactic scales – and what it means for dark energy and dark matter When galaxies align. NASA Thomas Collett,…

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