Technologies

The James Webb Telescope Just Zoomed In on A Hot, Haze-Free Exoplanet

Planet TOI-421b lacks the haze of other exoplanets, which means we’re able to get a surprisingly clear understanding of it.

The James Webb Space Telescope just zoomed in on the atmosphere of a planet discovered in 2020 — and now we have the clearest data ever about an exoplanet.

The awkwardly named Planet TOI-421b’s exoplanet status means that it doesn’t orbit our sun. (Exoplanets are defined as any planet beyond our solar system.)

Don’t expect to travel there any time soon. It’s 244 light-years away from the Earth — for comparison, the dwarf planet Pluto is only five and a half light-hours from us. The planet orbits a star that is similar to our sun. It is considered a sub-Neptune planet because it’s larger than Earth, but smaller than Neptune, which is four times larger than Earth.

The planet was discovered through astronomical transit, which means astronomers noticed that a star dimmed as TOI-421b passed it in orbit. This isn’t a heavenly body that a hobbyist can spot, but the best cameras out there can get you started with astrophotography.

The exoplanet was mapped by a team of astronomers from NASA, the European Space Agency and the Canadian Space Agency, who worked together to analyze the planet’s atmosphere using a form of study called spectroscopy. By parsing out light frequencies in a planet’s atmosphere, scientists can figure out what elements are present — and which ones are missing.

TOI-421b’s atmosphere is rich in hydrogen and contains signs of water vapor. But it doesn’t contain signs of methane, which leads to hazy atmospheric conditions.

Most sub-Neptune exoplanets have atmospheres shrouded in haze, which makes them difficult to image. TOI-421b was chosen for the project because the initial analysis led scientists to believe that the planet could be accurately and clearly pictured through spectroscopic imaging.

Is this planet a ‘unique snowflake’?

The team of astronomers published their findings in the Astrophysical Journal Letters, where all of the key data for the project is collected in one paper. You can read the full write-up here.

The spectroscopic images of TOI-421b are accessible in the results section of the paper, and they paint a picture of many of the exoplanet’s strange and exciting properties.

Other sub-Neptune worlds had atmospheres filled with heavy gases that indicated they were potentially mostly composed of water, but TOI-421b is composed of lightweight gases — much like the star it orbits.

This has raised questions about how different types of stars could potentially affect the atmospheres of their orbiting planets. In a statement to Mashable, Eliza Kempton, the lead investigator on the study, said it was something the astronomers would need to further explore.

«We can see if this planet just turned out to be kind of a unique snowflake, or is it emblematic of a class of planets that all have similar properties,» she said.

Technologies

Today’s NYT Connections Hints, Answers and Help for March 15, #1008

Here are some hints and the answers for the NYT Connections puzzle for March 15, No. 1,008

Looking for the most recent 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, Connections: Sports Edition and Strands puzzles.

Today’s NYT Connections puzzle is kind of tough, but the yellow category has some fun options in it. Read on for clues and today’s Connections answers.

The Times has a Connections Bot, like the one for Wordle. Go there after you play to receive a numeric score and to have the program analyze your answers. Players who are registered with the Times Games section can now nerd out by following their progress, including the number of puzzles completed, win rate, number of times they nabbed a perfect score and their win streak.

Read more: Hints, Tips and Strategies to Help You Win at NYT Connections Every Time

Hints for today’s Connections groups

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

Yellow group hint: Mine, all mine!

Green group hint: A part you might use to build something.

Blue group hint: Blended words.

Purple group hint: Not a cow, but close.

Answers for today’s Connections groups

Yellow group: Greedily control.

Green group: Toothed wheels.

Blue group: Portmanteaux.

Purple group: Bull ____.

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

What are today’s Connections answers?

The yellow words in today’s Connections

The theme is greedily control. The four answers are bogart, corner, hog and monopolize.

The green words in today’s Connections

The theme is toothed wheels. The four answers are cog, gear, pinion and sprocket.

The blue words in today’s Connections

The theme is portmanteaux. The four answers are blog, motel, smog and spork.

The purple words in today’s Connections

The theme is bull ____. The four answers are dog, doze, frog and horn.

Technologies

Today’s NYT Strands Hints, Answers and Help for March 15, #742

Here are hints and answers for the NYT Strands puzzle for March 15, No. 742.

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

Today’s NYT Strands puzzle is fun and timely, relating to a certain big ceremony held this weekend. Some of the answers are difficult to unscramble, so if you need hints and answers, read on.

I go into depth about the rules for Strands in this story.

If you’re looking for today’s Wordle, Connections and Mini Crossword answers, you can visit CNET’s NYT puzzle hints page.

Read more: NYT Connections Turns 1: These Are the 5 Toughest Puzzles So Far

Hint for today’s Strands puzzle

Today’s Strands theme is: Best of all

If that doesn’t help you, here’s a clue: The envelope, please.

Clue words to unlock in-game hints

Your goal is to find hidden words that fit the puzzle’s theme. If you’re stuck, find any words you can. Every time you find three words of four letters or more, Strands will reveal one of the theme words. These are the words I used to get those hints but any words of four or more letters that you find will work:

RATE, RATED, DATE, DOTE, DATED, DOTED, GATE, GATES, TROD, TRODS

Answers for today’s Strands puzzle

These are the answers that tie into the theme. The goal of the puzzle is to find them all, including the spangram, a theme word that reaches from one side of the puzzle to the other. When you have all of them (I originally thought there were always eight but learned that the number can vary), every letter on the board will be used. Here are the nonspangram answers: