Technologies

Mars snow is dusty, and might even melt into liquid water

Dusty, dark Mars ice could suck up solar energy and maybe even get a little melty.

This story is part of Welcome to Mars, our series exploring the red planet.

Back in 2008, NASA made a big announcement that its Phoenix lander had confirmed water ice near the surface of Mars. A team of researchers has taken a new look at what Phoenix found, combined it with data from NASA’s Mars Reconnaissance Orbiter, and used computer simulations to better understand the dustiness of the ice and what that can tell us about Mars’ climate history.

Not surprisingly, Mars snow has dust mixed into it. «The dustier the ice is, the darker and thus warmer the ice gets, which can affect both its stability and evolution through time,» Arizona State University said in a statement last week. «Under certain conditions, this might also mean that the ice could melt on Mars.»

The team’s paper on the Martian ice has been accepted for publication in the Journal of Geophysical Research: Planets.

«There is a chance that this dusty and dark ice might melt a few centimeters down,» said planetary scientist Aditya Khuller, lead author of the paper. «And any subsurface liquid water produced from melting will be protected from evaporating in Mars’ wispy atmosphere by the overlying blanket of ice.»

The research points to the ice investigated by Phoenix coming from dusty snowfall sometime over the last million years. It will require further work to determine if the ice might actually melt into liquid water, but it’s an intriguing idea.

Understanding water on Mars is key to understanding the chances the red planet might have once hosted microbial life. Current-day Mars is dry, dusty and very cold, which makes it pretty inhospitable, though a study earlier this year suggested Earth microbes might be able to survive on Mars temporarily.

Ice on Mars could also be important for future human visitors who will need water resources. In 2019, NASA released a «treasure map» of water ice that could potentially be reached by astronauts.

The history of water on Mars is complex and often mysterious. Some recent studies had suggested there might be hidden briny lakes at the planet’s south pole, but newer evidence argues they might actually be frozen clays. NASA’s Perseverance rover is currently checking out a former lakebed in the Jezero Crater in a search for signs of ancient microbial life.

The new study on Martian snow and its dustiness gives scientists one more piece to place into the larger puzzle of Mars water. Could there be pockets of puddles on Mars? Perhaps. You might want to pack a straw just in case.

Follow CNET’s 2021 Space Calendar to stay up to date with all the latest space news this year. You can even add it to your own Google Calendar.

Technologies

Today’s NYT Connections: Sports Edition Hints and Answers for April 4, #193

Three of the four categories are especially tough today. Here are hints and the answers, for the NYT Connections: Sports Edition puzzle, No. 193, for April 4.

Looking for the most recent regular Connections answers? Click here for today’s Connections hints, as well as our daily answers and hints for The New York Times Mini Crossword, Wordle and Strands puzzles.

I only solved one of the four categories for today’s Connections: Sports Edition on my own, so if you need help, you’re not alone.

The yellow category was pretty simple, but after that I couldn’t make any connections. It might help if you know a lot about a certain NBA player’s resume. Read on for hints and the answers.

Connections: Sports Edition is out of beta now, making its debut on Super Bowl Sunday, Feb. 9. That’s a sign that the game has earned enough loyal players that The Athletic, the subscription-based sports journalism site owned by the Times, will continue to publish it. It doesn’t show up in the NYT Games app but now appears in The Athletic’s own app. Or you can continue to play it free online.

Read more: NYT Connections: Sports Edition Puzzle Comes Out of Beta

Hints for today’s Connections: Sports Edition groups

Here are four hints for the groupings in today’s Connections: Sports Edition puzzle, ranked from the easiest yellow group to the tough (and sometimes bizarre) purple group.

Yellow group hint: Do better.

Green group hint: March Madness.

Blue group hint: Six-time all-star.

Purple group hint: Think Wimbledon.

Answers for today’s Connections: Sports Edition groups

Yellow group: Not meeting expectations.

Green group: Teams in the Women’s Final Four.

Blue group: Teams Kawhi Leonard has played for.

Purple group: Ends in a piece of tennis equipment.

Read more: Wordle Cheat Sheet: Here Are the Most Popular Letters Used in English Words

What are today’s Connections: Sports Edition answers?

The yellow words in today’s Connections

The theme is not meeting expectations. The four answers are bust, disappointment, dud and failure.

The green words in today’s Connections

The theme is teams in the Women’s Final Four. The four answers are Bruins, Gamecocks, Huskies and Longhorns.

The blue words in today’s Connections

The theme is teams Kawhi Leonard has played for. The four answers are Aztecs, Clippers, Raptors and Spurs.

The purple words in today’s Connections

The theme is ends in a piece of tennis equipment. The four answers are bracket, eyeball, horseshoes and internet.

Quick tips for Connections: Sports Edition

#1: Don’t grab for the easiest group. For each word, think about other sports categories it might fit in – is this a word that can be used in football, or to describe scoring options?

#2: Second meanings are important. The puzzle loves to use last names and even college names that mean other things, to fool you into thinking they are words, not names.

#3: And the opposite is also true. Words like HURTS might seem like a regular word, but it’s also the last name of at least one pro athlete.

Technologies

Skip Your iPhone’s Lockscreen: Here’s the Hidden Flashlight Trick You Need to Know

A couple of taps can really make a difference on your iPhone.

Not long ago, your iPhone’s lockscreen would only allow two app shortcuts that you couldn’t change: camera controls and a flashlight toggle. However, iOS 18.2 allows you to customize these shortcuts to almost anything you might want. This small but impactful change is one of many ways iOS 18 supercharges customization for iPhone and iPad users. But what if you still want an easy-to-access way to toggle your flashlight without unlocking your phone?

Apple introduced an accessibility feature in iOS 14 that, once enabled, allows you to perform actions by just tapping on the back of your phone. The feature is called Tap Back and it remains a sleeper feature that’s sneakily hidden away in your settings menu. Enabling Tap Back essentially allows you to create a button on the back of your iPhone to perform an action without needing to take up any space.

Once you have Tap Back enabled, it doesn’t take long to see how much of a game-changer it can be with its added convenience. Below, we’ll show you how to set it up so a couple of taps on the back of your iPhone will let you launch just about anything you want.

For more, check out what’s in the latest iOS 18.4 release.

How to set up Back Tap on iPhone

Whether you want to link Back Tap with your flashlight, camera or launch a different iPhone app, the path through your iPhone settings begins the same way.

On your compatible iPhone (iPhone 8 or later), launch the Settings application and go to Accessibility > Touch > Back Tap. Now you have the option to launch your action (in this case, your flashlight) with either two or three taps. Although two taps is obviously faster, I would suggest three taps because if you fidget with your phone, it’s easy to accidentally trigger the accessibility feature.

Once you choose a tap option, select the Flashlight option — or a different action if you prefer. You’ll see over 30 options to choose from, including system options like Siri or taking a screenshot, to accessibility-specific functions like opening a magnifier or turning on real-time live captions. You can also set up Back Tap to open the Control Center, go back home, mute your audio, turn the volume up and down and run any shortcuts you’ve downloaded or created.

You’ll know you’ve successfully selected your choice when a blue checkmark appears to the right of the action. You could actually set up two shortcuts this way — one that’s triggered by two taps and one that’s triggered by three taps to the iPhone’s back cover.

Once you exit the Settings application, you can try out the newly enabled Back Tap feature by tapping the back of your iPhone — in my case, to turn on the flashlight. To turn off the flashlight, you can tap on the back of your iPhone as well, but you can also just turn it off from your lock screen if that’s easier.

For more great iPhone tips, here’s how to keep your iPhone screen from dimming all the time and canceling all those subscriptions you don’t want or need.

Technologies

All the Nintendo Games You Can Update to Switch 2 for Free

Bad news: Mario Kart World will cost $80. Good news: These classic games will get free revamped versions for Switch 2.

Nintendo’s Switch 2 launch event on Wednesday has upset some fans for one key reason: pricing. The new console will be released on June 5 at a starting price of $450, and it will have new games, like Mario Kart World, Kirby Air Riders and Donkey Kong Bananza. But those games could cost as much as $80 (and that’s before factoring in possible tariffs).

Fortunately, Nintendo has also announced that some Nintendo Switch games will get free updates to improve playability on the upcoming console.

«By connecting your Nintendo Switch 2 to the internet, you can download free updates that may improve performance or add support for features such as GameShare in select games,» the company posted.

Here are all the Nintendo Switch games that can get a free update for the Switch 2.

Nintendo also announced that other Switch games will have upgraded versions of the base game, called Switch 2 Editions. These games, which include The Legend of Zelda: Breath of the Wild and Tears of the Kingdom, may offer improved graphics, unique ways to play the game with the Switch 2 hardware, and other features.

You can buy a digital or physical copy of these games if you’re purchasing them for the first time. But Switch 2 Edition games are not free if you already own the Switch version of one of these games, so you’ll have to buy an upgrade pack to play the updated version.

It’s unclear how much Switch 2 Editions of games and upgrade packs will cost, and it’s also unclear how upgrade packs will work with physical versions of Switch games.

The Nintendo Switch 2 will also be backward compatible with certain games. While we don’t know all the Switch games that will be playable on the Switch 2, we know some Switch games have startup (PDF) or in-game (PDF) compatibility issues with the upcoming console.

For more on the Nintendo Switch 2 Direct, here’s what we know about the upcoming console and what to know about games like Mario Kart World and Duskbloods.