Technologies

Astronomers Spot a Ghostly Light Glowing Throughout the Solar System

Scientists used NASA’s Hubble Space Telescope to identify the presence of an unexplained glow amid the blackness of space.

The deep darkness of space might not actually be so dark in our solar system.

Astronomers analyzed over 200,000 images from NASA’s Hubble Space Telescope, making tens of thousands of measurements to try to locate a residual background glow in the night sky. The project is called SKYSURF, which is based at Arizona State University and involves researchers there and around the world.

The team harvested the data from the images and then subtracted the glow from planets, stars, galaxies and even ethereal zodiacal light, which is light reflecting off dust within our solar system.

After accounting for all this there was still a tiny bit of leftover glow or «ghost light,» which the researchers describe as equivalent to the glow of 10 fireflies spread across the entire night sky.

«We think it is a local phenomenon that is not from far outside the solar system,» ASU researcher Tim Carleton explained in a statement Thursday. «It may be a new element to the contents of the solar system that has been hypothesized but not quantitatively measured until now.»

A leading explanation is that the glow comes from a previously unaccounted for sphere of dust left behind by countless comets traveling through the solar system from all directions.

The discovery is documented in a handful of studies. Two have been published in the Astronomical Journal and another in Astrophysical Journal Letters.

One of the studies was led by Rogier Windhorst from ASU, who points out that over 95 percent of the photons in Hubble’s images come from distances on our side of the universe, less than 3 billion light-years from Earth.

«Since Hubble’s very early days, most Hubble users have discarded these sky-photons, as they are interested in the faint discrete objects in Hubble’s images, such as stars and galaxies,» Windhorst said. «But these sky-photons contain important information which can be extracted thanks to Hubble’s unique ability to measure faint brightness levels to high precision over its three decades of lifetime.»

And within that information, Windhorst and others may have just located a completely new piece of ethereal architectureunderlying our entire solar system. If you consider a faint but ubiquitous layer of dust to be architecture, that is.

Technologies

Today’s Wordle Hints, Answer and Help for April 7, #1753

Here are hints and the answer for today’s Wordle for April 7, No. 1,753.

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 wasn’t too tricky, for a change. 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.

Today’s Wordle hints

Before we show you today’s Wordle answer, we’ll give you some hints. If you don’t want a spoiler, look away now.

Wordle hint No. 1: Repeats

Today’s Wordle answer has one repeated letter.

Wordle hint No. 2: Vowels

Today’s Wordle answer has one vowel, but it’s the repeated letter, so you’ll see it twice.

Wordle hint No. 3: First letter

Today’s Wordle answer begins with D.

Wordle hint No. 4: Last letter

Today’s Wordle answer ends with E.

Wordle hint No. 5: Meaning

Today’s Wordle answer can relate to something that is closely compacted.

TODAY’S WORDLE ANSWER

Today’s Wordle answer is DENSE.

Yesterday’s Wordle answer

Yesterday’s Wordle answer, April 6, No. 1752, was SWORN.

Recent Wordle answers

April 2, No. 1748: SOBER

April 3, No. 1749: SINGE

April 4, No. 1750: SANDY

April 5, No. 1751: ENVOY

What’s the best Wordle starting word?

Don’t be afraid to use our tip sheet ranking all the letters in the alphabet by frequency of uses. In short, you want starter words that lean heavy on E, A and R, and don’t contain Z, J and Q.

Some solid starter words to try:

ADIEU

TRAIN

STARE

NOISE

Technologies

Today’s NYT Mini Crossword Answers for Tuesday, April 7

Here are the answers for The New York Times Mini Crossword for April 7.

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? 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.