Satellite image of the Tonga explosion.
TONGA METEOROLOGICAL SERVICES/EPA
Volcanic eruptions can wreak havoc in the upper atmosphere.
The mission is set to launch in March 2022. Here’s what you need to know.
An artistic representation of 10 hot Jupiters, studied with the Hubble and Spitzer space telescopes.
Clouds, hellish temperatures, endless nights? Characterizing the atmosphere of exoplanets, planets that orbit stars other than the sun, is a formidable task.
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)
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.
The Earth spins as it orbits the Sun. Elements of this image furnished by Nasa.
Only a planet crashing into it might stop the Earth’s spin.
The rocket boosters for the Space Launch System that will launch Nasa’s Artemis I mission to the Moon.
Nasa plans to test its new rocket system for the Moon, and a new rover is due to begin its journey to Mars.
mRNA vaccines: not just for COVID.
Experts give us a science preview for 2022, plus what lies in store for global inequality. Listen to The Conversation Weekly podcast.
In some ways, a space rocket and a passenger aircraft fly much the same. But there is one big reason we can’t just take an aircraft into space.
Plus, the tactics the food industry is using to boost sales of ultra-processed foods in middle-income countries. Listen to The Conversation Weekly.
Philippe Starck / Axiom Space
NASA is backing four commercial space station projects. The newcomers may find they have much to learn about how people really live in space.
Starlink satellites are quite visible in the night sky.
Megaconstellations of satellites will visually clutter the night sky, disrupting astronomical research. And the environmental damage caused by these satellites is still unknown.
An asteroid that landed in Russia in 2013 injured 1,500 people – and was just 20 metres in diameter. What could we do if a major threat was detected?
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)
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.
There’s a lot we don’t know about galaxies.
We have to look back to the Big Bang to find out.
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
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.
The planet Saturn.
Saturn, Jupiter, Neptune and Uranus all have rings.
Space debris produced by anti-satellite weapons can have dangerous consequences.
Russia’s testing of an anti-satellite weapon risked the life of astronauts on the International Space Station and could have astronomical impacts on Earth.
Artist’s view of traceable debris around the Earth - the debris is shown magnified relative to the size of the Earth.
A Russian satellite has been destroyed in a missile strike, creating a vast amount of debris that joins the tens of thousands of pieces already in orbit around the Earth.
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
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.
International space law doesn’t explicitly prohibit anti-satellite missile tests — which makes uproar over Russia’s actions all the more significant.