Peter Søholm

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Japanese Probe Drops Tiny Hopping Robots Toward Big Asteroid Ryugu

Two tiny hopping robots have begun their historic attempt to land on a big asteroid in deep space.<p>Japan's Hayabusa2 probe, which has been circling …

Aerospace

Ask Ethan: If Light Contracts And Expands With Space, How Do We Detect Gravitational Waves?

For the past three years, humanity has known a new kind of astronomy from the traditional ones. No longer are we merely detecting light with a telescope, or neutrinos with enormous particle detectors, to give us an eye on the Universe. In addition to those, we’re also seeing, for the first time, …

LIGO

Meet The Four-Dimensional Numbers That Led to Modern Algebra

Imagine winding the hour hand of a clock back from 3 o’clock to noon. Mathematicians have long known how to describe this rotation as a simple …

Mathematics

How the Next Generation of Ground-Based Super-Telescopes will Directly Observe Exoplanets

According to a new study by an international team of scientists, astronomers will be able to directly observe exoplanets using next-generation …

Universe

Gravitational-constant mystery deepens with new precision measurements - Physics World

Two extremely precise measurements of the gravitational constant <i>G</i> have yielded significantly different values. The two experiments were done by …

Physics

Our Motion Through Space Isn't A Vortex, But Something Far More Interesting

There are a lot of moving parts to the Universe, as nothing exists in isolation. There are literally trillions of large masses in our Solar System, all orbiting around the galactic center on timescales of hundreds of millions of years. But there’s a viral video, parts 1 and 2, that claims that as …

Solar System

NASA Chief Wants to Send Humans to the Moon — 'To Stay'

HOUSTON — Jim Bridenstine wants to make sure that there is never another day when humans are not in space.<p>"In fact," the NASA administrator said, "we …

Johnson Space Center

Scientists Drastically Sped Up Production of a Mineral That Harvests CO2

We need to do something about all this CO2.<p>If we’re going to have any hope of reversing the troubling trend of years that get steadily hotter on …

The Mystery of Jupiter’s Swirling Colors Is Finally Solved, Scientists Say

The answer was buried way below the surface.<p>A new study has finally offered an explanation for Jupiter’s trippy colors and unusual swirls. These …

Sorry, neighboring Omega Centauri is probably uninhabitable

The massive globular cluster is likely too disruptive a place for habitable planets to remain.

What’s Next for the Heart of the Milky Way

<b>Q: Firstly can you tell us about the observations your team have just completed?</b><p><b>A:</b> The star S2 passed very close to the black hole in the centre of …

There's a Tiny Strange Galaxy Orbiting The Milky Way And No One Knows How It Got There

A weird and ancient neighbour.<p>A galaxy in nearby space called Segue 1 is quite the oddity. It's very small, and very faint, it hangs out very close …

Egyptian students design car that runs on air

CAIRO (Reuters) - A group of Egyptian students has designed a vehicle they say will battle rising energy prices and promote clean energy by running on nothing but air.<p>The undergraduate students, who built the vehicle as part of their graduation project from Helwan University just outside Cairo, are …

List-Worthy

Sorry Elon Musk, but it's now clear that colonising Mars is unlikely – and a bad idea

Space X and Tesla founder Elon Musk has a vision for colonising Mars, based on a big rocket, nuclear explosions and an infrastructure to transport …

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

Next time you eat a blueberry (or chocolate chip) muffin consider what happened to the blueberries in the batter as it was baked. The blueberries …

There Is an Absolutely Gigantic Rogue Planet Wandering Our Galactic Neighbourhood

It can teach us so much.<p>There is a very strange object floating around our stellar neighbourhood and it has astronomers intrigued.<p>It's very large, …

How to turn a kitchen microwave into a plasma-etching device - MIT Technology Review

Plasmas have never been easy to create or exploit. But now you can make them in your own kitchen.<p>Every high school science course focuses on the …

University of Maryland

3D-printed Deep Learning neural network uses light instead of electrons

It's a novel idea, using light diffracted through numerous plates instead of electrons. And to some, it might seem a little like replacing a computer …

NASA contest finalists show off their Mars habitat models

They'll now have to build a one-third-scale version of their designs.<p>Yes, we've yet to successfully send humans to Mars, but we already need to start thinking how we can stay there for long stretches of time -- or even for good. NASA launched the 3D-Printed Habitat Challenge back in 2015 to find a …

The Large Hadron Collider Just Successfully Accelerated Its First Atoms

Get ready for new science.<p>The Large Hadron Collider below Switzerland and France has just accelerated its first atoms to almost the speed of light, …

There Was No Big Bang Singularity

Almost everyone has heard the story of the Big Bang. But if you ask anyone, from a layperson to a cosmologist, to finish the following sentence, “In the beginning, there was…” you’ll get a slew of different answers. One of the most common ones is “a singularity,” which refers to an instant where …

A 12-mile, underground lake may have been found on Mars. What could live there?

The red Martian surface may be barren and arid, but about a mile underneath Mars' south pole, scientists think they've found something …

One Woman’s Math Could Help NASA Put People on Mars

Kathleen Howell never aspired to walk on the moon. When she watched the first lunar landing as a teenager in 1969, she was more intrigued by the …

Our Local Group Is Being Eaten, And We Just Found The Galactic Leftovers

Here in the Local Group, our two largest galaxies dominate: Andromeda and the Milky Way.<p>The next largest, Triangulum, is much smaller: only 5% the Milky Way’s mass.<p>About 60 dwarf galaxies also remain: the cosmic survivors.<p>But the history of galactic cannibalism, where larger galaxies devour smaller …

Europa Lander May Not Have to Dig Deep to Find Signs of Life

If signs of life exist on Jupiter's icy moon Europa, they might not be as hard to find as scientists had thought, a new study reports.<p>The …

Life may have existed on the Moon four billion years ago

When Neil Armstrong set foot on the Moon’s surface in July 1969, it was not only a giant leap for mankind, but was also thought to have been the first time the satellite had ever hosted life.<p>The lunar world was said to be a "dead rock", lacking the volcanic activity needed to create an atmosphere …

Thought Experiment Shows Why We Need Quantum Gravity

There are two theories we have that explain all the particles and their interactions in the known Universe: General Relativity and the Standard Model …

Found: Famous Gas Giant In Our Galaxy Has A Doppelganger, Reveals Study

Some 60 light-years away from Earth, in the Milky Way’s Pictor constellation, lies a giant super-Jupiter that goes by the name of Beta Pictoris b. …

A Trillion Worlds

Times sure change. A little over two decades ago, the discovery of a new extrasolar planet was invariably treated as front-page news. In recent …

Antimatter plasma reveals secrets of deep space signals

Mysterious radiation emitted from distant corners of the galaxy could finally be explained with efforts to recreate a unique state of matter that …