Technologies

NASA Sent 3 Drones to Death Valley to Prepare for Travel to Mars

Teams were subject to Death Valley’s extreme heat, with temperatures reaching to over 110 degrees Fahrenheit.

NASA hit a snag last year when the Ingenuity Mars helicopter crashed on the Red Planet. The space agency concluded that the crash was caused by the vehicle’s inability to discern flat ground from featureless sand dunes. To avoid such a hiccup in the future, a team of NASA scientists recently descended upon Death Valley, California, to brave the heat and test a team of research drones over similar featureless areas.

«Ingenuity was designed to fly over well-textured terrain, estimating its motion by looking at visual features on the ground,» said Roland Brockers, a NASA Jet Propulsion Laboratory drone pilot and researcher. «But eventually it had to cross over blander areas where this became hard. We want future vehicles to be more versatile and not have to worry about flying over challenging areas like these sand dunes.»

Don’t miss any of our unbiased tech content and lab-based reviews. Add CNET as a preferred Google source.

It’s not the first time NASA has taken a field trip to the hottest place on Earth. The agency has used Death Valley since the 1970s to test various technologies in preparation for journeys to Mars. This time around, the team was testing Extended Robust Aerial Autonomy software, an autonomous flight system designed to handle a greater range of terrains on Mars. This would prevent another Ingenuity-style incident involving future explorers.

The team had to endure temperatures that reached a maximum of around 113 degrees Fahrenheit, with only a small pop-up tent to shield them from the intense sun and heat. While NASA has used Death Valley for testing for decades, the JPL team that went in 2025 was only the third team ever to obtain a license to fly research drones at Death Valley.

Death Valley officials were only too happy to accommodate the researchers.

«It’s a powerful reminder that the park is protected not just for its scenic beauty, but as a living laboratory that actively helps us understand desert environments,» said Death Valley National Park Superintendent Mike Reynolds.

Useful findings

All of this testing took place in April and September, so NASA has had some time to review the data and determine what worked. According to the agency, the findings showed that different camera filters were effective for various types of terrain, and the improved algorithms enabled drones to descend and land more safely.

In addition to Death Valley, the team also took their drones to the Dumont Dunes area of the Mojave Desert, renowned for its massive sand dunes, which are a popular spot for off-road recreational vehicles, sandboarding and sand sledding. It’s also noted for its variety of dune formations, providing NASA’s JPL team with more data to test against.

There are currently no named missions that are set to send a helicopter back to Mars, but NASA and the European Space Agency are developing two mini-Ingenuity helicopters that may one day help return all the samples dutifully collected by the Perseverance Mars rover on its journeys across Mars. Those helicopters will undoubtedly utilize the technology that was tested and improved during NASA’s field trip to Death Valley.

Technologies

Today’s NYT Mini Crossword Answers for Wednesday, Dec. 24

Here are the answers for The New York Times Mini Crossword for Dec. 24.

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

Need some help with today’s Mini Crossword? I’m Irish-American, but yet 6-Down, which involves Ireland, stumped me at first. Read on for all the answers.. And if you could use some hints and guidance for daily solving, check out our Mini Crossword tips.

If you’re looking for today’s Wordle, Connections, Connections: Sports Edition and Strands answers, you can visit CNET’s NYT puzzle hints page.

Read more: Tips and Tricks for Solving The New York Times Mini Crossword

Let’s get to those Mini Crossword clues and answers.

Mini across clues and answers

1A clue: Wordle or Boggle
Answer: GAME

5A clue: Big Newton
Answer: ISAAC

7A clue: Specialized vocabulary
Answer: LINGO

8A clue: «See you in a bit!»
Answer: LATER

9A clue: Tone of many internet comments
Answer: SNARK

Mini down clues and answers

1D clue: Sharks use them to breathe
Answer: GILLS

2D clue: From Singapore or South Korea, say
Answer: ASIAN

3D clue: Large ocean ray
Answer: MANTA

4D clue: ___ beaver
Answer: EAGER

6D clue: Second-largest city in the Republic of Ireland, after Dublin
Answer: CORK

Don’t miss any of our unbiased tech content and lab-based reviews. Add CNET as a preferred Google source.

Technologies

Quadrantids Is a Short but Sweet Meteor Shower Just After New Year’s. How to See It

This meteor shower has one of the most active peaks, but it doesn’t last for very long.

The Quadrantids has the potential to be one of the most active meteor showers of the year, and skygazers won’t have long to wait to see it. The annual shower is predicted to reach maximum intensity on Jan. 3. And with a display that can rival Perseids, Quadrantids could be worth braving the cold to see it.

Don’t miss any of our unbiased tech content and lab-based reviews. Add CNET as a preferred Google source.

The show officially begins on Dec. 28 and lasts until Jan. 12, according to the American Meteor Society. Quadrantids is scheduled to peak on Jan. 2-3, when it may produce upwards of 125 meteors per hour. This matches Perseids and other larger meteor showers on a per-hour rate, but Quadrantids also has one of the shortest peaks at just 6 hours, so it rarely produces as many meteors overall as the other big ones.

The meteor shower comes to Earth courtesy of the 2003 EH1 asteroid, which is notable because most meteor showers are fed from comets, not asteroids. Per NASA, 2003 EH1 is a near-Earth asteroid that orbits the sun once every five and a half years. Science posits that 2003 EH1 was a comet in a past life, but too many trips around the sun stripped it of its ice, leaving only its rocky core. The Earth runs through EH1’s orbital debris every January, which results in the Quadrantids meteor shower.

How and where to see Quadrantids

Quadrantids is named for the constellation where its meteors appear to originate, a point known as the radiant. This presents another oddity, as the shower originates from the constellation Quadrans Muralis. This constellation ceased to be recognized as an official constellation in the 1920s and isn’t available on most publicly accessible sky maps.

For the modern skygazer, you’ll instead need to find the Bootes and Draco constellations, both of which contain stars that were once a part of the Quadrans Muralis. Draco will be easier to find after sunset on the evening of Jan. 2, and will be just above the horizon in the northern sky. Bootes orbits around Draco, but will remain under the horizon until just after 1 a.m. local time in the northeastern sky. From that point forward, both will sit in the northeastern part of the sky until sunrise. You’ll want to point your chair in that direction and stay there to see meteors.

As the American Meteor Society notes, Quadrantids has a short but active peak, lasting around 6 hours. The peak is expected to start around 4 p.m. ET and last well into the evening. NASA predicts the meteor shower to start one day later on Jan. 3-4, so if you don’t see any on the evening of Jan. 2, try again on Jan. 3.

To get the best results, the standard space viewing tips apply. You’ll want to get as far away from the city and suburbs as possible to reduce light pollution. Since it’ll be so cold outside, dress warmly and abstain from alcoholic beverages, as they can affect your body temperature. You won’t need any binoculars or telescopes, and the reduced field of view may actually impact your ability to see meteors.

The bad news is that either way, the Quadrantids meteor shower coincides almost perfectly with January’s Wolf Moon, which also happens to be a supermoon. This will introduce quite a lot of light pollution, which will likely drown out all but the brightest meteors. So, while it may have a peak of over 100 meteors per hour, both NASA and the AMS agree that the more realistic expectation is 10 or so bright meteors per hour.

Technologies

Today’s Wordle Hints, Answer and Help for Dec. 24, #1649

Here are hints and the answer for today’s Wordle for Dec. 24, No. 1,649.

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

Today’s Wordle puzzle is a little tricky, with a double letter that could confuse players. If you need a new starter word, check out our list of which letters show up the most in English words. If you need hints and the answer, read on.