Technologies

Comet Nishimura Survives Brush With the Sun and Enters Evening Sky

The space snowball is now heading back out to deep space for the next four hundred years, but it might be possible to catch it as it goes.

The brightest comet of 2023 is still intact after making a hairpin turn around the sun over the weekend.

Comet C/2023 P1 (Nishimura) was first spotted last month by Hideo Nishimura, an amateur astronomer in Japan, using only a digital camera setup and a lot of skill. It made its close pass by the sun on Sept. 17 before being flung back out to deep space.

Under dark skies, the comet is easily visible with the naked eye. Unfortunately, as it recedes to the outer limits of the solar system, it is best viewed low on the horizon just after sunset, when it can be washed out by fading daylight.

A number of sky watchers and astrophotographers are reporting having luck imaging it using a digital camera on a tripod taking exposures that last at least a few seconds.

However, it’s encouraging that Nishimura survived its encounter with the sun and there is always a chance it could brighten as it passes by Earth’s orbit.

How to catch the comet

This comet is trickier to see than other bright comets of the recent pass due to its low angle to the horizon, which is really a reflection of how close it passed by the sun. This is why it’s been most visible before sunrise on its way toward the sun and now after sunset as it recedes into space.

«It’s really best seen with binoculars or a telescope,» Alison Klesman, who holds a doctorate in astronomy, wrote for Astronomy.com. «But through those optics, it will dazzle.»

You can search for the comet in the constellation Leo an hour or two before sunrise. You can use apps like Stellarium, Star Walk or TheSkyLive to help locate it.

See bright Comet Nishimura at dawn.
Finder chart below. pic.twitter.com/CMRiPk4dPM

— Con Stoitsis (@vivstoitsis) September 4, 2023

It’s very difficult to know what the future holds for a comet. They can travel for centuries from the edge of the solar system to make a single orbit around the sun. At the same time, they are fragile things with a tendency to disintegrate as they pass through the inner solar system. They’ve even been known to crash into Jupiter or the sun along the way. The dinosaurs may also have had a close encounter with one many millions of years ago.

The comet has met some serious resistance during its journey in the form of blasts of charged particles and plasma issuing forth from a tumultuous sun. Observers like astrophotographer Michael Jaeger (see above) watched earlier this month as a solar storm engulfed the comet and appeared to blow a portion of its tail away for a moment.

Here’s a more dramatic example that was captured by NASA in 2007 of Comet Encke having its tail briefly stolen:

«Researchers call this a disconnection event; it’s caused by a CME (or fast solar wind stream) hitting the comet,» former NASA astronomer Tony Phillips wrote at Spaceweather.com.

CME stands for coronal mass ejection, which is an eruption from the outer layers of the sun that often accompanies a solar flare. Think of it as a very strong gust of energetic wind coursing through space and causing electromagnetic chaos. This is the same force that causes auroras to light up the skies when it collides with Earth’s magnetic field. It can also influence other things in space, like asteroids and comets.

The sun is currently building toward the peak of its roughly 11-year solar cycle, which means more frequent flares and CMEs.

Technologies

Today’s NYT Mini Crossword Answers for Saturday, Feb. 28

Here are the answers for The New York Times Mini Crossword for Feb. 28.

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? As is usual for Saturday, it’s pretty long, and should take you longer than the normal Mini. A bunch of three-initial terms are used in this one. 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: Rock’s ___ Leppard
Answer: DEF

4A clue: Cry a river
Answer: SOB

7A clue: Clean Air Act org.
Answer: EPA

8A clue: Org. that pays the Bills?
Answer: NFL

9A clue: Nintendo console with motion sensors
Answer: WII

10A clue: ___-quoted (frequently said)
Answer: OFT

11A clue: With 13-Across, narrow gap between the underside of a house and the ground
Answer: CRAWL

13A clue: See 11-Across
Answer: SPACE

14A clue: Young lady
Answer: GAL

15A clue: Ooh and ___
Answer: AAH

17A clue: Sports org. for Scottie Scheffler
Answer: PGA

18A clue: «Hey, just an F.Y.I. …,» informally
Answer: PSA

19A clue: When doubled, nickname for singer Swift
Answer: TAY

20A clue: Socially timid
Answer: SHY

Mini down clues and answers

1D clue: Morning moisture
Answer: DEW

2D clue: «Game of Thrones» or Homer’s «Odyssey»
Answer: EPICSAGA

3D clue: Good sportsmanship
Answer: FAIRPLAY

4D clue: White mountain toppers
Answer: SNOWCAPS

5D clue: Unrestrained, as a dog at a park
Answer: OFFLEASH

6D clue: Sandwich that might be served «triple-decker»
Answer: BLT

12D clue: Common battery type
Answer: AA

14D clue: Chat___
Answer: GPT

16D clue: It’s for horses, in a classic joke punchline
Answer: HAY

Technologies

Ultrahuman Ring Pro Brings Better Battery Life, More Action and Analysis

The company’s new flagship smart ring stores more data, too. But that doesn’t really help Americans.

Sick of your smart ring’s battery not holding up? Ultrahuman’s new $479 Ring Pro smart ring, unveiled on Friday, offers up to 15 days of battery life on a single charge. The Ring Pro joins the company’s $349 Ring Air, which boosts health tracking, thanks to longer battery life, increased data storage, improved speed and accuracy and a new heart-rate sensing architecture. The ring works in conjunction with the latest Pro charging case.

Ultrahuman also launched its Jade AI, which can act as an agent based on analysis of current and historical health data. Jade can synthesize data from across the company’s products and is compatible with its Rings.

«With industry-leading hardware paired with Jade biointelligence AI, users can now take real-time actionable interventions towards their health than ever before,» said Mohit Kumar, CEO of Ultrahuman.

No US sales

That hardware isn’t available in the US, though, thanks to the ongoing ban on Ultrahuman’s Rings sales here, stemming from a patent dispute with its competitor, Oura Ring. It’s available for preorder now everywhere else and is slated to ship in March. Jade’s available globally.

Ultrahuman says the Ring Pro boosts battery life to about 15 days in Chill mode — up to 12 days in Turbo — compared to a maximum of six days for the Air. The Pro charger’s battery stores enough for another 45 days, which you top off with Qi-compatible wireless charging. In addition, the case incorporates locator technology via the app and a speaker, as well as usability features such as haptic notifications and a power LED.

The ring can also retain up to 250 days of data versus less than a week for the cheaper model. Ultrahuman redesigned the heart-rate sensor for better signal quality. An upgraded processor improves the accuracy of the local machine learning and overall speed.

It’s offered in gold, silver, black and titanium finishes, with available sizes ranging from 5 to 14.

Jade’s Deep Research Mode is the cross-ecosystem analysis feature, which aggregates data from Ring and Blood Vision and the company’s subscription services, Home and M1 CGM, to provide historical trends, offer current recommendations and flag potential issues, as well as trigger activities such as A-fib detection. Ultrahuman plans to expand its capabilities to include health-adjacent activities, such as ordering food.

Some new apps are also available for the company’s PowerPlug add-on platform, including capabilities such as tracking GLP-1 effects, snoring and respiratory analysis and migraine management tools.