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Articles on Space

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Some stars travel at high speeds through the universe and sometimes leave spectacular clouds of dust and gas in their wake. NASA, ESA and R. Sahai (NASA's Jet Propulsion Laboratory)

Real shooting stars exist, but they aren’t the streaks you see in a clear night sky

Hypervelocity stars were discovered only 15 years ago and are the closest things in existence to real shooting stars. They travel at millions of miles per hour, so fast that they can escape from galaxies.
A composite image of the data collected by the ALMA telescope in Chile, showing spiral galaxies in the Virgo Cluster. ALMA (ESO/NAOJ/NRAO)/S. Dagnello (NRAO)/T. Brown (VERTICO)

Why it’s location, location, location, even when it comes to galaxy evolution

Studying the extreme environment of the Virgo Cluster — which comprises thousands of galaxies — helps us learn what factors can affect and start or stop star formation.
The International Space Station is a great example of how space has, for the most part, been a peaceful and collaborative international arena. NASA Marshall Spaceflight Center/Flickr

Space law hasn’t been changed since 1967 – but the UN aims to update laws and keep space peaceful

Activities in space today are far more numerous and complicated compared to 1967, before humans had landed on the moon or Elon Musk had been born. Two experts explain the need for better laws to keep space peaceful.
If a satellite is destroyed, the debris fans out in orbit and poses serious threats to other satellites or crewed spacecraft. ESA/ID&Sense/ONiRiXEL via WikimediaCommons

Russian anti-satellite weapon test: What happened and what are the risks?

Russia destroyed one of its old satellites during a successful test of an anti-satellite weapon. A space security expert explains what this weapon was and the dangers of the expanding debris field.

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