Antimatter Behaves Exactly the Same as Regular Matter in Double Slit Experiments

In 1924, French physicist Louis de Broglie proposed that photons – the subatomic particle that constitutes light – behave as both a particle and a wave. Known as “particle-wave duality”, this property has been tested and shown to apply with other subatomic particles (electrons and neutrons) as well as larger, more complex molecules.

Recently, an experiment conducted by researchers with the QUantum Interferometry and Gravitation with Positrons and LAsers (QUPLAS) collaboration demonstrated that this same property applies to antimatter. This was done using the same kind of interference test (aka. double-slit experiment) that helped scientists to propose particle-wave duality in the first place.

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The Global Dust Storm that Ended Opportunity Helped Teach us how Mars Lost its Water

Mars in 2001. On the left, no global dust storm. On the right, global dust storm. Image Credit: By Jim Secosky picked out this NASA image NASA/JPL/MSSS - https://photojournal.jpl.nasa.gov/figures/PIA03170_fig1.jpg, Public Domain, https://commons.wikimedia.org/w/index.php?curid=65809875

The enduring, and maybe endearing, mystery around Mars is what happened to its water? We can say with near-certainty now, thanks to the squad of Mars rovers and orbiters, that Mars was once much wetter. In fact that planet may have had an ocean that covered a third of the surface. But what happened to it all?

As it turns out, the global dust storms that envelop Mars, and in particular the most recent one that felled the Opportunity rover, may offer an explanation.

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The World’s Space Agencies are Responding to a Hypothetical Asteroid Impact. You Can Watch it all Unfold Online.

One of the many PHOs (Potentially Hazardous Objects) that we're keeping an eye on. Image Credit: NASA

Remember when Orson Welles’ 1938 radio show called “The War of the Worlds” fooled people into thinking that Earth was actually being invaded? That was fun.

Now, the ESA (European Space Agency) is tempting fate by live-tweeting the hypothetical approach of the hypothetical asteroid 2019PDC and hypothetically planning a hypothetical response to this hypothetically destructive asteroid. In their hypothetical scenario, 2019 PDC has a 1 in 10 chance of striking Earth in 2029. And you can follow the action on Twitter.

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Rapidly Spinning Black Hole is Spitting Out Blobs of Plasma

An artist's illustration of the black hole V404 Cygni. Image Credit: ICRAR.

Black holes, those beguiling singularities that sit on the precipice of the known and the unknown, keep surprising us with their behaviour. As organizations like the Event Horizon Telescope have made clear, there’s a lot we don’t know about the holes, and worse than that, we don’t even know how much we don’t know.

Now scientists have observed a new phenomenon that adds to the black hole mystique: a rapidly spinning black hole that ejects massive blobs of plasma.

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Methane-Filled Lakes on Titan are “Surprisingly Deep”

A near-infrared mosaic image of Saturn's moon Titan shows the sun reflecting and glinting off of Titan's northern polar seas. Image Credit: NASA/JPL-Caltech/University of Arizona/University of Idaho

The Cassini mission to Saturn and its moons wrapped up in 2017, when the spacecraft was sent plunging into the gas giant to meet its end. But there’s still a lot of data from the mission to keep scientists busy. A team of scientists working with Cassini data have made a surprising discovery: Titan’s methane-filled lakes are much deeper, and weirder, than expected.

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It’s Finally here. The First Ever Image of a Black Hole



We have taken the first picture of a black hole.


EHT project director Sheperd S. Doeleman of the Center for Astrophysics | Harvard & Smithsonian.

What was once un-seeable can now be seen. Black holes, those difficult-to-understand singularities that may reside at the center of every galaxy, are becoming seeable. The Event Horizon Telescope (EHT) has revealed the first-ever image of a black hole, and with this image, and all the science behind it, they may help crack open one of the biggest mysteries in the Universe.

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Metal Asteroid Psyche Might Have Had Volcanoes of Molten Iron

An artist's illustration of a metallic asteroid like Psyche. Image Credit: Elena Hartley/USC

Imagine a time in the Solar System’s past where the asteroids were not solid rock, but blobs of molten iron. It sounds strange, but that may have been the case. And in the right conditions, some of those asteroids would have sprouted volcanoes. One of those asteroids, Psyche, is the destination for a NASA mission.

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Rivers on Mars Flowed for More Than a Billion Years

A photo of a preserved river channel on Mars. The color is overlaid to show elevation, with blue being low and yellow being high elevation. Image Credit: NASA/JPL/Univ. Arizona/UChicago

The ancient climate of Mars is a mystery to scientists. Even with all we’ve learned about Mars, it’s still difficult to explain how lakes and rivers existed. A new study shows that Martian rivers were swollen with runoff and that they flowed far later into the planet’s history than previously thought.

The question is, how did the Martian climate create these conditions?

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New Ring of Dust Discovered in the Inner Solar System

An illustration of the dust rings around the Sun. Image Credit: NASA’s Goddard Space Flight Center/Mary Pat Hrybyk-Keith

Discovering new things in space is a regular occurrence. Astronomers keep finding more distant objects in the outer reaches of the Solar System. Worlds like ‘The Goblin,’ ‘FarOut,’ and ‘FarFarOut‘ are stretching the limits of what our Solar System actually is.

But finding new things in the inner Solar System is rare.

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Massive Photons Could Explain Dark Matter, But Don’t

I’ll be the first to admit that we don’t understand dark matter. We do know for sure that something funny is going on at large scales in the universe (“large” here meaning at least as big as galaxies). In short, the numbers just aren’t adding up. For example, when we look at a galaxy and count up all the hot glowing bits like stars and gas and dust, we get a certain mass. When we use any other technique at all to measure the mass, we get a much higher number. So the natural conclusion is that not all the matter in the universe is all hot and glowy. Maybe some if it is, you know, dark.

But hold on. First we should check our math. Are we sure we’re not just getting some physics wrong?

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