Strange particles observed by an experiment in Antarctica could be evidence of an alternative reality where everything is upside down

Thousands of dead satellites and chunks of debris in orbit are a threat to active satellites, but rockets that launch clouds of talcum powder may prevent a disastrous collision

An unusually round and symmetrical deposit on Mars may be the result of an impact that popped the surface of the planet, causing a volcanic eruption less than 200,000 years ago

Cecilia Payne-Gaposchkin, who discovered that hydrogen dominates our universe, finally gets the recognition she deserves in a rich biography, What Stars Are Made Of

Some black holes are way bigger than we can explain, and they may have come from supermassive stars that formed by devouring the other stars around them

When Earth and Venus formed, they both had global magma oceans deep underground. Earth’s has turned solid by now, but Venus’s may still remain hidden

Pluto’s ancient oceans may have come about just after the icy world was born, melting from ice in a process that suggests the dwarf planet took just 30,000 years to form

Our measurements of the Hubble constant can't seem to come up with a consistent answer. What we learn next may alter our view of the cosmos, writes Chanda Prescod-Weinstein

A tiny meteorite found in Antarctica doesn’t match any asteroid or comet we know of. Instead, it must have come from a mystery parent body that’s full of water

Could life on Mars have hidden from extreme weather in a cavern on the Pavonis Mons volcano? This 2011 orbiter image of an otherworldly crater has NASA asking just that

The first-ever interstellar comet is showing signs of brightening, suggesting it may have been heated up as it passed near to the sun

The Hayabusa-2 spacecraft bombed the asteroid Ryugu in April. Analysing the crater it left behind suggests Ryugu is a relative youngster at 9 million years old

Venus’s surface is covered in strange wiggling lines that may form when colossal stacks of lava are carved by gentle winds over hundreds of millions of years

When Mars was young, parts of the planet may have been able to sustain RNA, a molecule that probably played a key role in the beginnings of life on Earth

The Rosetta spacecraft’s measurements of comet 67P have revealed a hidden source of nitrogen that may help us learn how giant planets – and even life – formed

Proxima Centauri b, a planet orbiting our nearest stellar neighbour, is being blasted with cosmic rays and solar flares – which could make it warm enough to host life

The ExoMars mission, a joint venture between the European and Russian space agencies, will be delayed for two years. It has already been plagued by issues and the coronavirus hasn't helped

Exoplanet WASP-76b, which is about 390 light years from the solar system, has a strange iron signature in its atmosphere, suggesting the metal is raining down on the planet's night side

Our images of deep space are spectacular, but don’t reflect what our eyes would see. Here's what their stunning true colours reveal about the cosmos

A leading theory for the formation of the moon is that a planet called Theia smashed into the early Earth, but doubts remain. Now a new analysis of lunar rock supports this idea

A huge black hole from when the universe was less than a billion years old is shooting a powerful jet at Earth, and studying it could help us understand the young cosmos

In the early universe, particles called neutrinos had a starring role in determining where galaxy clusters formed and which elements were created when stars exploded

Lettuce grown on the International Space Station has been served with tacos and cheeseburgers, and it turns out to be just as nutritious as the Earth-grown version

SpaceX is partnering with a US start-up called Axiom Space to launch three space tourists on a 10-day trip to the International Space Station

Out of 28,000 suggestions, NASA selected the name Perseverance for its Mars 2020 rover, which will search for signs of life on the Red Planet

A team of researchers say they have discovered a protein molecule inside a meteorite, the first extraterrestrial example ever found, but others are sceptical

White dwarf stars are common in the galaxy, but astronomers have found one that doesn't seem to obey the rules. They think it was born when two smaller white dwarfs merged together

A huge black hole in a distant galaxy caused the largest explosion we have ever seen, with the energy of 10 billion suns – and it isn't clear why it was so big

A space flight start-up called Astra is about to attempt to launch two small rockets into orbit over a few weeks to win $12 million from the US military

A private satellite that is low on fuel could survive five more years because another satellite has come to its rescue – a technique that could be used by future service spacecraft

Earth’s atmosphere thankfully provides air for us to breathe, but when trying to study interesting objects in space it causes all sorts of problems, writes Chanda Prescod-Weinstein

China’s Yutu-2 rover has used radar to peer 40 metres under the surface of the far side of the moon and revealed how past impacts have shaped its geology

Astronomers have spotted an asteroid that has been captured by Earth's gravity, making it a temporary mini-moon. It will probably fly away again in April

The enormous black hole at the centre of the Milky Way was active millions of years ago, and its intense X-rays may have formed some molecules necessary for life

NASA’s InSight lander has been on the surface of Mars for over a year now – here are five of its strangest and most fascinating discoveries from the Red Planet

When the Soviet Union lands on the moon first people in the US are shocked. But For All Mankind provides an even bigger surprise when one cosmonaut's identity is revealed, says Emily Wilson

Stars like our sun formed in a dense cluster with thousands of others, during which time they may have swapped planets

We’ve spotted strange blasts of radio waves from space in a pattern that may be produced by a magnetised neutron star wobbling as it spins

There’s nothing like crash-landing on an alien planet. Journey to the Savage Planet doesn't always get it right, but it has echoes of classic Metroid Prime, says Jacob Aron

SpaceX and the space tourism firm Space Adventures have announced a plan to fly paying customers into Earth orbit, higher than the International Space Station

For the first time, astronomers have spotted an exoplanet by detecting radio waves generated by interactions with its parent star

A spacecraft designed to study re-entry into Earth's atmosphere has a nose coated in cork, a cheap and lightweight alternative to other materials

The International Astronomical Union has concluded a review of satellite mega constellations such as SpaceX's Starlink satellites and found they will have a major impact on large telescopes, but not naked eye astronomy

NASA has selected four potential future missions – to Jupiter’s fiery moon Io, Neptune’s icy moon Triton, and two that would explore the atmosphere and map the surface of Venus

Young Mars may have endured a series of huge collisions that smashed its mantle, throwing off our measurements of when it formed by up to 15 million years

NASA's Juno spacecraft has found that Jupiter contains more water than measured by its predecessor, Galileo, solving a long-running planetary mystery

Strange, powerful blasts of radio waves from space called fast radio bursts sometimes flash repeatedly, but never with any discernible pattern – until now

Every day on Pluto, nitrogen puffs out the icy world’s heart-shaped plain into the atmosphere, and every night it refreezes, creating winds unlike any we’ve seen before

A group of astronomers has called for legal action to stop the launch of thousands of satellites designed by companies like SpaceX and OneWeb to beam high-speed internet around the world

In our atmosphere, strange dense patches of charged air sometimes bounce radio waves around and disrupt radar – and now they have been spotted on Mars