Technologies

How Did Life Happen? NASA Says It Found Tantalizing Clues on Asteroid Bennu

It’s the first time scientists have discovered six-carbon glucose in an extraterrestrial sample.

New research announced by NASA on Tuesday details a bevy of exciting discoveries from asteroid dust that could provide clues to how life developed in our neck of the cosmos, including the sugars required for basic life forms, a mysterious gum-like substance and a surprising amount of stardust from supernovae.

NASA’s robot spacecraft, Osiris-Rex, scooped up rocks and dust from the asteroid Bennu in 2020 and delivered the sample to Earth in 2023. Since then, scientists around the globe have been studying the space rocks to gain insight into the early days of our solar system.

Yoshihiro Furukawa, a scientist from Tohoku University in Japan, led a team that found the sugar. It’s the first time scientists have discovered six-carbon glucose — a universal source of carbon and fuel for life forms — in an extraterrestrial sample. Five-carbon sugar ribose was also present in the samples, but this type of sugar has previously been found in space.

«Although these sugars are not evidence of life, their detection, along with previous detections of amino acids, nucleobases and carboxylic acids in Bennu samples, show building blocks of biological molecules were widespread throughout the solar system,» the NASA release states.

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Furukawa said in a statement that all of the nucleobases needed to build DNA and RNA have already been found in the Bennu samples, so «the new discovery of ribose means that all of the components to form the molecule RNA are present in Bennu.»

The findings were published in Nature on Tuesday, and the researchers say their work supports a hypothesis called RNA World. The hypothesis relates to the origins of life on our planet. It states that before complex life existed on Earth, there was an RNA world that predated the development of modern cells.

Ancient ‘space gum’ and supernovae dust

Aside from life-building sugars, the Bennu sample holds a few other interesting findings. A pair of researchers named Scott Sandford (from NASA’s Ames Research Center) and Zack Gainsforth (from the University of California, Berkeley) also released a paper in Nature on Tuesday about a «gum-like» material that’s never been found on space rocks before now.

Originally, the substance was soft and flexible, the researchers say, but it hardened over time. The space gum is made of «polymer-like materials extremely rich in nitrogen and oxygen.» This is a significant development, NASA says, because it could contain some of the «chemical precursors» that helped initiate life on our planet.

«With this strange substance we’re looking at, quite possibly, one of the earliest alterations of materials that occurred in this rock,» Sandford said in a statement. «On this primitive asteroid that formed in the early days of the solar system, we’re looking at events near the beginning of the beginning.»

Yet a third paper published in Nature on Tuesday from a research team led by Ann Nguyen (NASA’s Johnson Space Center in Houston) looked into dust found on the Bennu samples that came from stars older than our own solar system. There was a lot more supernova dust than expected.

The samples held six times more stardust than scientists have found on any other astromaterial.

«Their preservation in the Bennu samples was a surprise and illustrates that some material escaped alteration in the parent body,» Nguyen said in a statement. «Our study reveals the diversity of presolar materials that the parent accreted as it was forming.»

NASA’s Goddard Space Flight Center provided overall mission management for Osiris-Rex.

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

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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.

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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.