Mark Thompson

Science broadcaster and author. Mark is known for his tireless enthusiasm for making science accessible, through numerous tv, radio, podcast and theatre appearances, and books. He was a part of the award-nominated BBC Stargazing LIVE TV Show in the UK and his Spectacular Science theatre show has received 5 star reviews across UK theatres. In 2025 he is launching his new podcast Cosmic Commerce and is working on a new book 101 Facts You Didn't Know About Deep Space In 2018, Mark received an Honorary Doctorate from the University of East Anglia.

You can email Mark here

Recent Articles

The Planet That Lied About Its Own Spin

August 15, 2026

A new study warns that astronomers measuring the rotation of distant exoplanets may often be measuring atmospheric winds instead, since the clouds of Venus circle the planet roughly 60 times faster than Venus itself actually spins. Kane proposes using multi-wavelength observations to correct for this, work that will matter enormously once the European Space Agency's PLATO mission launches in 2027 and, researchers predict, discovers several hundred Venus like exoplanets.
The Sun Doesn't Care About Your Flight Schedule

August 15, 2026

New research shows that extreme space weather can significantly raise radiation exposure on commercial flights and increase electronic faults in aircraft systems. A severe 1956 scale solar storm could expose passengers to a year's worth of radiation in a single flight, and the researchers point to last year's Airbus A320 grounding, triggered by a solar radiation linked flight computer fault, as proof this isn't theoretical. To address the gap, the team has proposed a new aviation specific radiation scale designed to give airlines clearer, more reliable guidance on when to monitor, reroute, or ground flights during severe events.
The Brightened Night Sky Nobody Actually Wanted

August 15, 2026

A new study modelling Reflect Orbital's proposed constellation of giant orbital mirrors finds their light pollution would be severe. A single 54 metre satellite would appear four magnitudes brighter than the full moon to anyone in its beam, and its scattered glow would outshine moonlight across the sky from 14 kilometres away, remaining visible from over 30 kilometres out. With the pilot satellite already approved by the FCC despite astronomer objections, and up to 50,000 mirrors planned by the mid-2030s, the research puts hard numbers on a fight over who controls the night sky, and who answers for what's lost when it disappears.
The Tarantula That Lost Its Fire

August 14, 2026

A new composite image combining data from Chandra, Hubble, Webb and the retired Spitzer telescope has helped astronomers solve a long standing puzzle in the Tarantula Nebula, a star forming region 160,000 light years away. Young, massive stars there should be heating enough gas to emit X-rays, but observations showed far less X-ray emission than predicted.
The Rooms We Build To Survive In, And The Ones We Build To Live In

August 13, 2026

What does a home actually need to do for us, beyond keeping the weather out? Engineers at MIT have started mapping the answer for astronauts heading to the Moon and Mars, tracing exactly how the walls, layouts and lighting around a person shape their stress, their loneliness and their sense of belonging. It turns out the science of surviving a place and the science of living in one are not the same thing at all, and I have spent enough of the last year thinking about that difference to know how much it matters.
The Ingredients For Planets Turned Up Astonishingly Early

August 13, 2026

Planet building was supposed to be one of the universe's slow projects, something that only got going billions of years after the Big Bang. New research suggests otherwise. The raw materials for rocky worlds, and perhaps even the water needed for life, may have been ready to go just 100 million years after the Big Bang, long before the first galaxies had even taken shape.
Two Million X-Ray Sources, and One Cluster That Doesn't Fit

August 12, 2026

The eROSITA telescope has released its second great catalogue of the X-ray sky with close to two million sources across half the sky, roughly double what it published before. Buried in it is a result from Bonn that matters more than the headline number. A team there went after the faintest part of a massive galaxy cluster, the outer region where fresh material is still arriving along threads of gas stretching between clusters. Nobody had measured that emission before. The gas turns out to be hotter, denser and poorer in heavy elements than the models say it should be.
Twenty Years of Watching One Galaxy, and It Made Less Sense

August 12, 2026

Blazars are galaxies with a jet aimed almost directly at us, and they flicker across every part of the spectrum at once. Almost everything we think we know about them comes from short observing campaigns just a handful of days, every year or two, in one narrow band of energy. A Polish and German team has now done the opposite, following a single blazar for nearly twenty years with two orbiting observatories and in two observations from 2012 they found something in the spectrum that nobody had predicted.
Nine Hundred Telescopes and One Chance a Year

August 12, 2026

Reading the atmosphere of another world means catching starlight as it filters through that planet's air during a transit. The signal is about one part in a million and a true Earth twin transits only once a year, so you cannot simply repeat the measurement until the noise averages away. Each attempt has to work on its own. A team led from Shanghai has proposed the alternative to building an impossibly large mirror in space - nine hundred, one metre telescopes, flying together, watching the same transit and analysing the light together.
Every Snowflake Needs a Speck of Dust and So Do Planets

August 11, 2026

A snowflake cannot form out of nothing. Water vapour will sit in the air quite happily, supercooled and reluctant, until it finds a speck of dust to build on and then it crystallises around it. Cosmochemists have had a version of that problem for decades. The early Solar System was a furnace of gas, and the first solid grains had to condense out of it somehow, yet condensing from a perfectly uniform gas is slow and difficult work. New research from Caltech, analysing fragments of a meteorite that fell over Mexico in 1969, suggests the seeds were already there. Buried inside the oldest solids we possess are specks of stardust from a star that lived and died before the Sun existed.
The Dark Matter Detector in the Scottish Borders

August 11, 2026

Hunting for dark matter usually means building something enormous and burying it — a tank of liquid xenon in a mine, a magnet the size of a lorry, decades of engineering and a great deal of money. A team in Japan have just done it differently. They realised that the Earth's own magnetic field is larger than any magnet we could ever construct, and that the gap between the ground and the ionosphere behaves as a natural resonating cavity, ringing at around eight cycles per second. If dark matter is what some theorists suspect, it should leave a faint hum in that cavity. So they went looking, not with a new instrument, but in ten years of geomagnetic readings already recorded at a quiet observatory in Dumfriesshire in Scotland.
What If There's a Star Inside a Black Hole?

August 11, 2026

Ask what lies inside a black hole and the honest answer has always been a bit of a shrug and something about a singularity, a point where density becomes infinite and physics stops being able to tell you anything at all. It is the most unsatisfying answer in astrophysics, second only perhaps to what happened before the Big Bang. Now two theorists in China have produced a solution in which something else sits inside the horizon entirely, a neutron star, whole and intact, twelve kilometres across, its interior perfectly well behaved and apparently defying the laws of physics.
Seven Needles, 800,000 Haystacks

August 10, 2026

A quasar is a supermassive black hole in the act of feeding, and it’s so bright that it drowns out the galaxy it sits in. That is a nuisance if you want to weigh the galaxy and weighing it is exactly what you need to do to understand how black holes and the host galaxies grew up together. There is a way round it however, catch a quasar whose galaxy happens to be bending the light of something further away, and the bending betrays the mass. The catch is that such alignments are vanishingly rare, and the survey that might contain them holds 800,000 quasars. A team at Ohio State set a neural network on the pile and it came back with seven.
The Odds of Finding Water on Mars

August 10, 2026

Mars has plenty of water, and almost all of it is in the wrong place. The poles are rich in ice, the equator, where you would actually want to land, has none within reach. That leaves the mid-latitudes, and until now the honest answer about what lies beneath them has been a bit of a shrug. Two new studies from the Planetary Science Institute have changed the shape of that answer. Rather than simply asking whether the data are consistent with buried ice, they have started calculating the odds and can now say, of a given patch of Martian ground, that there is a 64 per cent chance of finding ice if you dig there.
The Telescope That Points Itself

August 10, 2026

Time on a large professional telescope is one of the scarcest resources in science. Astronomers wait months for a few hours, and every one of those hours is a running argument with the weather, the Moon and the atmosphere. Point at the wrong target at the wrong moment and the data comes back soft, washed out, or useless, with the next chance half a year away. A team has now handed that argument to a machine. Their system was trained not on the rules astronomers use but on what astronomers actually did, night after night, for years.
The Asteroid That May Be Three Worlds

August 01, 2026

We have been watching asteroid (44) Nysa for well over a century without ever really knowing what it looks like. Now the sharpest images ever taken of it, from two of the largest telescopes on Earth, have revealed two deep valleys running right around its circumference and the team behind them think those are necks, joining three separate lobes into a single 75 kilometre body. If that holds up, Nysa is the first three lobed world we have ever found. And in the glare beside it the same observations turned up something nobody was looking for, a tiny moon a kilometre across, which may be the thing that settles the argument.
The Star That Exploded Without Hydrogen

July 31, 2026

Twenty five years ago a star in the constellation Puppis blew itself apart and then vanished behind a curtain of its own soot. Astronomers knew only that the explosion contained no hydrogen at all, which for the most abundant element in the universe is a very strange absence. Now the dust has finally thinned, and the culprits have stepped into view, a white dwarf quietly stripping a rare helium star of its substance. But the emerging picture came with something nobody expected, clumps of gas tearing outwards at twenty million miles an hour, of a kind never seen in any other nova. Nobody yet knows what fired them.
What happens to a moon when its planet is stolen?

July 31, 2026

The galaxy is littered with rogue planets, worlds flung out of the systems that built them, drifting between the stars with no sun to call their own. But when a planet is torn away, does anything go with it? New simulations say yes, a passing star can rip a world out of its orbit and leave its moons still faithfully circling it, sailing off into the dark as a set. If our own Jupiter were evicted tomorrow, all four Galilean moons would go with it. And in that darkness, with no sunlight at all, one of those moons might still be warm enough for an ocean.
The Exciting Plan to Photograph an Alien Continent

July 30, 2026

NASA has selected a concept study, led by physicist Paul Stankus, exploring whether a pair of spacecraft flying in tight formation could one day produce an actual image of an Earth like exoplanet's surface, oceans, continents and all. It's an early stage idea, backed by NASA's Innovative Advanced Concepts program, but if it ever came together, it would represent an extraordinary leap beyond simply detecting a distant world to genuinely seeing its face.
A Thermal Camera Trick Could Let LIGO See Twice as Far

July 30, 2026

A team of researchers have found a surprisingly simple way to boost the sensitivity of gravitational wave detectors like LIGO. It’s surprisingly simple to, just point an ordinary thermal imaging camera at the mirrors themselves. The technique could improve LIGO's next upgrade by up to 31%, letting it detect neutron star collisions tens of millions of light years farther away, and is already being built into the design of its planned successor, Cosmic Explorer.