How Do Retroreflectors Give You Super Vision at Night?

How Do Retroreflectors Give You Super Vision at Night?

When a beam of light hits a super-shiny object like a mirror, it reflects off it in a very particular way.Photograph: Rhett AllainFor both of them, their light hits the mirror at the same angle that their light also reflects from the mirror—but in the opposite direction.

The Dark Asteroid Ryugu Finally Comes Into the Light

The Dark Asteroid Ryugu Finally Comes Into the Light

This new research, led by Deborah Domingue at the Planetary Science Institute in Tucson, Arizona, and Yasuhiro Yokota at Kochi University in Japan, sheds light on Ryugu’s complex structure, revealing it to be a dark, weathered pile of rubble tumbling in space, different from anything seen on the surface of the Earth.

Google Earth Now Shows You Our Planet’s Slow Deterioration

Google Earth Now Shows You Our Planet’s Slow Deterioration

Today, Google announced a new 3D time-lapse feature in its Google Earth platform.Google says the time-lapse feature draws from 20 petabytes of satellite imagery, combined to create a 4.4-terapixel video (that's 4.4 million megapixels) that maps to the surface of the globe.

Ancient Rocks Reveal When Earth's Plate Tectonics Began

Ancient Rocks Reveal When Earth's Plate Tectonics Began

Now, a study of the rocks from the Australian Outback by Tusch, Münker and their co-authors, published in Proceedings of the National Academy of Sciences, has captured “a snapshot” of the advent of plate tectonics, said Alan Collins, a geologist at the University of Adelaide in Australia.

Satellites Can Help Detect When a Volcano's About to Blow

Satellites Can Help Detect When a Volcano's About to Blow

A new study from a Jet Propulsion Laboratory group led by Társilo Girona highlights the possibility that presently available satellite data could provide an entirely new way to warn of eruptions .Heat is obviously a relevant parameter for volcanic activity, but it can be quite variable at the individual spots where you might set up a thermometer.

Challenging Conservation Not to Leave Women Behind

Challenging Conservation Not to Leave Women Behind

There is a persistent perception that men should be the decision-makers and leaders in most contexts, both within conservation/natural resource management organizations and in the communities where they work.

February’s Gonna Be a Big Month for Mars

February’s Gonna Be a Big Month for Mars

On February 9, the United Arab Emirates’ Hope spacecraft is expected to enter orbit around Mars after a six-month, 300-million-mile journey from Earth.China’s space agency has been quiet about its plans for visiting the Red Planet, but the craft is expected to attempt a landing shortly after it achieves orbit.

The Crooked, Complex Geometry of Round Trips

The Crooked, Complex Geometry of Round Trips

You might not spend much time imagining life on a cube, but mathematicians do: They study what travel looks like on all kinds of different shapes.On a sphere, straight paths follow “great circles,” which are geodesics like the equator.

How NASA Scrambled to Save OSIRIS-REx From Leaky Disaster

How NASA Scrambled to Save OSIRIS-REx From Leaky Disaster

Another possibility, given the surprisingly viscous surface material, is that the regolith’s soft, malleable rocks wedged into the Mylar flap opening and weren’t able to make it all the way into the head, Moreau says.

These Are the Very Best Laptop Deals for Black Friday

These Are the Very Best Laptop Deals for Black Friday

For gaming, video editing, or other power-hungry tasks, aim for an Intel Core i7 or AMD Ryzen 7 processor with 16 gigabytes of RAM and a dedicated graphics card by Nvidia or AMD.Be sure to read our guide to the best laptops , best cheap laptops , best MacBooks , and best Surface PCs for more recommendations.Microsoft Surface Deals.

Marine heatwave conditions forming: NIWA

Marine heatwave conditions forming: NIWA

NIWA forecasters say a marine heatwave is forming around parts of New Zealand after sea surface temperatures (SSTs) warmed considerably last month.

What Is a Super Typhoon, and Why Are They So Dangerous?

What Is a Super Typhoon, and Why Are They So Dangerous?

The reason that both storms have been so strong and so late is that both the Pacific and Atlantic oceans have stayed warm this year, says John Knaff, a meteorologist at NOAA’s Cooperative Institute for Research in the Atmosphere at Colorado State University.

Amazon Prime Day: 27 Best Deals if You Work From Home (2020)

Amazon Prime Day: 27 Best Deals if You Work From Home (2020)

We've tested a variety of home office gear that could improve your space, many of which are discounted for Amazon's Prime Day as well as at other retailers hosting site-wide sales.Photograph: X Chair Flexispot EN1 Standing Desk for $236 ($12 off)—Tap the Coupon Button: Clip the coupon to see the discount at checkout.

New tsunami monitoring system for Pacific

New tsunami monitoring system for Pacific

A network of state-of-the-art tsunami buoys is being deployed from New Zealand up into the Pacific to keep communities safer.Every 15 seconds the BPR records the height of the ocean above it and sends that information to the surface buoy once an hour.

The 25 Best Labor Day Sales on Gear We Love

The 25 Best Labor Day Sales on Gear We Love

Samsung Galaxy Buds+ Wirefree Earbuds for $130 ($20 off): It may not seem like a steep discount, but this matches the best price we've seen, and it's only happened once before.We've seen this price drop before, and we'll likely see it again, but $50 is $50.

The 22 Best Labor Day Sales on Gear We Love

The 22 Best Labor Day Sales on Gear We Love

Samsung Galaxy Buds+ Wirefree Earbuds for $130 ($20 off): It may not seem like a steep discount, but this matches the best price we've seen, and it's only happened once before.

The Joy of ‘Analog’ Cooking on a Green Coleman Camp Stove

The Joy of ‘Analog’ Cooking on a Green Coleman Camp Stove

The Coleman certainly has its flaws, and I'll get to those, but let's pause here and talk about an industry-wide problem: the lack of easy recycling for the camp fuel canisters.

California Wildfires Can Create Their Own Terrifying Weather

California Wildfires Can Create Their Own Terrifying Weather

“Even though the surface winds were pretty weak, there was a low-level jet above the mountains,” says Craig Clements, a fire weather researcher (and fire chaser ) at San Jose State University.

How to Watch NASA Launch Its New Perseverance Mars Rover

How to Watch NASA Launch Its New Perseverance Mars Rover

The skycrane is outfitted with eight small engines that start firing when the rover is about half a mile up to rapidly slow its fall to just a few miles per hour.“These particular engines are actually a derivative of the original engines developed for Viking landers in the early ’70s, but we've made very significant upgrades,” says Fred Wilson, a propulsion expert at Aerojet Rocketdyne, the company that made the propulsion system for the Perseverance landing system.

Mad Scientists Revive 100-Million-Year-Old Microbes

Mad Scientists Revive 100-Million-Year-Old Microbes

Elsewhere in the world’s oceans, much of the seafloor sediment is organic matter.There’s no upwelling and much less life at the surface, so much less organic matter is sinking to the seafloor to form sediment.

How a ‘Heat Dome’ Forms—and Why This One Is So Perilous

How a ‘Heat Dome’ Forms—and Why This One Is So Perilous

A heat dome “is really just sort of a colloquial term for a persistent and/or strong high-pressure system that occurs during the warm season, with the end result being a lot of heat,” says climate scientist Daniel Swain of UCLA’s Institute of the Environment and Sustainability.

Will We Recognize Life on Mars When We See It?

Will We Recognize Life on Mars When We See It?

When she’s not hunting for ancient life on other planets, Bosak studies the earliest life on our own, a process she says is analogous to what Perseverance will be doing on Mars.

Which Microsoft Surface Device Should You Buy?

Which Microsoft Surface Device Should You Buy?

Best known for innovative, tablet-like hardware designs, Microsoft has expanded its Surface line over the years and now offers a full family of computers, from a standard laptop to a giant desktop.Last year, Microsoft added a 15-inch model to its Surface Laptop line.

Why the Arctic Is Warming So Fast, and Why That’s So Alarming

Why the Arctic Is Warming So Fast, and Why That’s So Alarming

But those currents may be changing because more melting ice is injecting the Arctic Ocean with freshwater, which is less dense than saltwater, and therefore floats above it.

Ground-Penetrating Radar Mapped a Buried Ancient Roman City

Ground-Penetrating Radar Mapped a Buried Ancient Roman City

The ruins are deep underground, but a team of archaeologists from the University of Cambridge and Ghent University in Belgium have used ground-penetrating radar (GPR) to map the complete city.

That Fresh Sea Breeze You Breathe May Be Laced With Microplastic

That Fresh Sea Breeze You Breathe May Be Laced With Microplastic

“That bubble actually acts as like a sponge for tiny particles like sea salt, viruses, bacteria, and—potentially—plastics, as it comes up through the water column,” says University of Strathclyde microplastic researcher Deonie Allen, co-lead on the new research.

Space Photos of the Week: Europa! Attempt No Landing There

Space Photos of the Week: Europa! Attempt No Landing There

The puzzling, fascinating surface of Jupiter's icy moon Europa looms large in this newly-reprocessed color view, made from images taken by NASA's Galileo spacecraft in the late 1990s.Photograph: NASA/JPL-Caltech/SETI InstituteOur final image in this series shows more chaos terrain in a region called Chaos Near Agenor Linea.

Space Photos of the Week: 50 Years After Apollo 13

Space Photos of the Week: 50 Years After Apollo 13

Photograph: NASAThe crew took this spectacular image of the Earth while returning from the Moon.Photograph: NASAAfter two intense days of what you might call extreme work-arounds, all three crew members of Apollo 13 landed safely back on Earth.

Space Photos of the Week: Perfectly Safe Celestial Coronas

Space Photos of the Week: Perfectly Safe Celestial Coronas

The word “corona” has Latin roots, meaning essentially “crown.” The solar corona is the outermost region of the Sun’s atmosphere, a hazy aura made of colder plasma that is released from the surface of the star.

Space Photos of the Week: Venus Is the Spacecraft-Killer

Space Photos of the Week: Venus Is the Spacecraft-Killer

Photograph: NASA/JPLNASA’s Pioneer Venus Orbiter studied the planet for over a decade and while it was there, it captured this stunning photo.Photograph: NASAMost terrestrial planets have channels like the ones we see here: On Earth they are mostly formed by water, on Mars by lava flows.