New eclipsing double white dwarf binary discovered

New eclipsing double white dwarf binary discovered
Pan-STARRS1 color giy-bands image of ZTF J2243+5242, which is the blue object in the center of the image. Credit: Burdge et al., 2020.

Astronomers from the California Institute of Technology and elsewhere report the detection of a new eclipsing detached double white dwarf binary. The system, designated ZTF J2243+5242 has an orbital period of below 10 minutes, which makes it one of the shortest-period eclipsing binaries known to date. The finding is detailed in a paper published October 7 on arXiv.org.


Astronomers are interested in finding and studying double white dwarfs (DWDs), as their mergers are believed to produce new white dwarfs with higher masses. It is assumed that some high-mass white dwarfs in the solar neighborhood could be DWD merger products.

The Zwicky Transient Facility (ZTF), using the Palomar Observatory in California, is one of the most important astronomical surveys to search for double white dwarf binary systems. So

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Double jeopardy for ecologically rare birds and terrestrial mammals

endangered species
Credit: Pixabay/CC0 Public Domain

Common assumptions notwithstanding, rare species can play unique and essential ecological roles. After studying two databases that together cover all known terrestrial mammals and birds worldwide, scientists from the CNRS, the Foundation for Biodiversity Research (FRB), Université Grenoble Alpes, and the University of Montpellier have demonstrated that, though these species are found on all continents, they are more threatened by human pressures than ecologically common species and will also be more impacted by future climate change. Thus, they are in double jeopardy. The researchers’ findings, published in Nature Communications (October 8, 2020), show that conservation programs must account for the ecological rarity of species.


It has long been thought that rare species contribute little to the functioning of ecosystems. Yet recent studies have discredited that idea: Rarity is a matter not only of the abundance or geographical range of a species, but also of the distinctiveness

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Double jeopardy for ecologically rare birds and terrestrial mammals — ScienceDaily

Common assumptions notwithstanding, rare species can play unique and essential ecological roles. After studying two databases that together cover all known terrestrial mammals and birds worldwide, scientists from the CNRS, the Foundation for Biodiversity Research (FRB), Université Grenoble Alpes, and the University of Montpellier[1] have demonstrated that, though these species are found on all continents, they are more threatened by human pressures than ecologically common species and will also be more impacted by future climate change. Thus they are in double jeopardy. The researchers’ findings, published in Nature Communications (October 8, 2020), show that conservation programmes must account for the ecological rarity of species.

It has long been thought that rare species contribute little to the functioning of ecosystems. Yet recent studies have discredited that idea: rarity is a matter not only of the abundance or geographical range of a species, but also of the distinctiveness of its ecological functions.

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3 Popular Robinhood Stocks That Could Realistically Double Within 1 Year

Popularity isn’t necessarily a good thing. There have been plenty of popular stocks in the past that eventually flamed out.

But popularity isn’t necessarily a bad thing, either. For example, quite a few of the 100 most popular stocks on the Robinhood trading platform appear to have very good growth prospects. Here are three on the list that could even realistically double within one year.

Side view of a young woman looking at a smartphone with three lines trending upward and a city landscape in the background.

Image source: Getty Images.

1. Novavax

Novavax (NASDAQ:NVAX) has gone way beyond doubling over the last 12 months. The biotech stock is up more than 2,000% thanks to good news for its influenza and coronavirus vaccine programs. It could very well deliver another 100% or greater return over the next year.

What would it take? For one thing, Novavax needs its COVID-19 vaccine candidate NVX-CoV2373 to succeed in late-stage clinical studies. The company has already kicked off a late-stage study of the vaccine in the

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A simple $50 accessory can double the internet speed on your computer or gaming console



a man using a laptop computer sitting on top of a table: How To Speed Up Home Internet


© Provided by BGR
How To Speed Up Home Internet

  • Anyone wondering how to speed up your home internet without dropping a ton of cash on an overpriced mesh Wi-Fi system will be happy to hear that it’s much easier and less expensive than you think.
  • If you’re sick of slow internet speeds and “buffering” on your computer, TV, or video game console, there’s a simple device that will be a game-changer for you.
  • Before you do something drastic like buying a new router or a pricey mesh Wi-Fi system, check out the TP-Link AV1000 Gigabit Powerline Internet Kit, which is just $49.99 on Amazon.

When you’re trying to watch a video or stream a game, slow internet speeds and buffering can be your worst nightmare. It’s so aggravating, but it happens all the time. What you might not realize though, is that there’s a wonderfully easy way for

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When And Where You Can See Mars Shine With A ‘Harvest Moon’ While Venus Appears As ‘Double Star’

On Friday, October 2—just a day after Thursday’s full “Harvest Moon” rises at dusk—our satellite will appear to pass very close to a very bright planet Mars.

It’s going to be a special sight, and a reasonably rare one, too, because Mars is about to reach its brightest since 2003.

Do you know where and in the night sky to watch the moonrise and a Mars-rise? Or when to catch it?

Here’s exactly what you need to know to see this special celestial sight just after dusk on Friday—and the bonus sight of Venus shining super-close to bright star Regulus.

MORE FROM FORBESWhat’s That Really Bright ‘Star’ In The Night Sky?

When to

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MQ-9 Reaper Drone Flies with Double Hellfire Missiles in New Test

A new software update on the MQ-9 Reaper allows the hunter-killer drone to carry eight AGM-114 Hellfire missiles — double its usual capacity, according to a service release.

As part of “Operational Flight Program 2409,” members of the 556th Test and Evaluation month with the increased payload. The MQ-9 typically carries four Hellfires total under its wings. Squadron, Creech Air Force Base, Nevada, flew the unmanned autonomous vehicle earlier this

Read Next: This Navy Destroyer Just Broke the All-Time Record for Consecutive Days at Sea

With the upgrade, Hellfires pylons that previously were reserved for 500-lb. bombs, such as the GBU-38 Joint Direct Attack Munition, or for fuel tanks, can now carry the additional missiles, the release said.

“History has proven the MQ-9’s ability to provide aerial continuity and attack support for air and ground forces during counter-insurgency and Close Air Support,” Lt. Col. Michael Chmielewski, commander of the 556th

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Smart Inhaler Technology Market is expected to double its Market Size in Upcoming Years | Cohero Health, Propeller Health, 3M

The MarketWatch News Department was not involved in the creation of this content.

Sep 29, 2020 (Market Insight Reports) —
AMA Research added a comprehensive research document of 200+ pages on ‘Smart Inhaler Technology’ Market with detailed insights on growth factors and strategies. The study segments key regions that includes North America, Europe, Asia-Pacific with country level break-up and provide volume* and value related cross segmented information by each country. Some of the important players from a wide list of coverage used under bottom-up approach are Adherium Limited (New Zealand),AstraZeneca (England),Cohero Health (United States),GlaxoSmithKline (United Kingdom),Gecko Health Innovations Inc (United States),Inspiro Medical Ltd. (Israel),Propeller Health (United States),Boehringer Ingelheim GmbH (Germany),3M (United States),Merck & Co., Inc. (United States)

Sample Report + All Related Graphs & Charts @: https://www.advancemarketanalytics.com/sample-report/23731-global-smart-inhaler-technology-market

Inhaler is the medical device that is used to cure respiratory diseases. Smart inhalers have inbuilt digital sensors that helps in recording the

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New Research From Accenture and Girls Who Code Outlines Steps to Double the Number of Women in Technology in 10 Years

Joint report reveals just eight percent of women of color say it’s easy to thrive in technology

An inclusive culture is key to unlocking opportunities for women who are studying and working in technology, and holds the potential to double their number over the next 10 years, according to a joint research report by Accenture (NYSE: ACN) and Girls Who Code, an international nonprofit working to close the gender gap in technology.

This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20200929005390/en/

Accenture and Girls Who Code outline how much cultural practices can boost women in technology (Photo: Business Wire)

The report, “Resetting Tech Culture,” analyzed the journey for women in technology from college to mid-career. While there are many reasons women abandon a career in technology, the highest percentage of respondents — 37% — cite company culture as the leading cause.

The research shows that if every company

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Radiation levels on moon more than double those on space station

Sept. 25 (UPI) — Radiation levels on the surface of the moon are 2.6 times greater than those measured on the International Space Station, according to a new study.

NASA intends to put the first woman on the moon by 2024 — and the first man since 1972. Earlier this week, the space agency released new details about its Artemis program, including its decision to target a landing spot on the lunar South Pole near Shackleton Crater.

Regardless of where NASA’s lunar landers touch down, Artemis astronauts will need to protect themselves from increased radiation levels.

Using the Lunar Lander Neutron and Dosimetry, or LND, scientists were able to, for the first time, measure radiation levels on the lunar surface.

Scientists shared the first-of-their-kind measurements in a new paper, published Friday in the journal Science Advances.

“The radiation exposure we have measured is a good benchmark for the radiation within

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