Archive Pages Design$type=blogging

NASA Satellite Takes Incredible Video Of Ancient North Star Eclipse

By studying data from NASA’s Transiting Exoplanet Survey Satellite (or TESS), astronomers have discovered that the star Alpha Draconis (als...

>

By studying data from NASA’s Transiting Exoplanet Survey Satellite (or TESS), astronomers have discovered that the star Alpha Draconis (also known as Thuban) and its fainter companion star eclipse each other on a regular basis.

Angela Kochoska, who is a postdoctoral researcher at Villanova University in Pennsylvania and who presented the findings at the American Astronomical Society meeting in Honolulu, Hawaii on January 6th, said, “The first question that comes to mind is ‘how did we miss this?’”, adding, “The eclipses are brief, lasting only six hours, so ground-based observations can easily miss them. And because the star is so bright, it would have quickly saturated detectors on NASA’s Kepler observatory, which would also mask the eclipses.”

They have been ranked as one of the brightest binary stars eclipsing each other where both stars are separated from one another and only interact by gravitational means. Astronomers can calculate the size and mass of both stars which is why these binary systems are incredibly important.

Alpha Draconis is the fourth-brightest star in the constellation Draco and is located approximately 270 light-years from Earth. And approximately 4,700 years ago, it played a very important part in the building of the earliest Egyptian pyramids. While Polaris (located in the Ursa Minor constellation) is known today as the North Star, thousands of years ago the role was claimed by Alpha Draconis as the closest star to the North Pole.

A report that was released in 2004 indicated that Alpha Draconis’ brightness changed over an hour-long period which at that time suggested that the star was pulsating. However, when Timothy Bedding, Daniel Hey, and Simon Murphy from the University of Sydney, Australia, and Aarhus University in Denmark studied data from TESS, they found that the two stars were instead eclipsing each other. Their findings can be read in full here.

Kochoska and Hey have been working together in order to better understand the binary system. They found that the stars orbit every 51.4 days at an approximate distance of around 38 million miles (a little further than Mercury’s distance from the Sun). They watched the system from around three degrees above their orbital plane, meaning that the stars don’t completely cover each other during the eclipses. The primary star has a temperature of approximately 17,500 degrees Fahrenheit (70% hotter than our Sun) and is 4.3 times larger than our Sun. Its companion star is about half the size of the primary star and about five times fainter, but still around 40% hotter than our Sun.

Padi Boyd, who is a TESS project scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, stated, “Discovering eclipses in a well-known, bright, historically important star highlights how TESS impacts the broader astronomical community,” adding, “In this case, the high precision, uninterrupted TESS data can be used to help constrain fundamental stellar parameters at a level we’ve never before achieved.” NASA posted a video of the eclipse which can be seen here.

COMMENTS

Loading...
Name

Âm Nhạc Ẩm Thực Angela Phương Trinh Angelina Jolie Bảo Thy benh-gan Bộ Ảnh - Video Brad Pitt Bùa Ngải Bước Nhảy Hoàn Vũ cac-benh-ve-gan Cao Thái Sơn Chi Pu Chuyện chỉ có ở Trung Quốc Chuyện kỳ lạ về trẻ em Chuyện Lạ Chuyện lạ bốn phương chọn lọc Chuyện lạ cảm động về các loài vật Chuyện lạ khó tin nhưng lại có thật Chuyện lạ ở Nhật Bản Chuyện lạ thế giới khó tin nhưng có thật Chuyện lạ về các loài vật Chuyện lạ về các tài năng hiếm có Chuyện lạ về chó và mèo Chuyện lạ về du lịch Chuyện lạ về hôn nhân - vợ chồng Chuyện lạ về những kỷ lục giảm cân Chuyện lạ về sữa Chuyện lạ Việt Nam có thật Cine Cộng Đồng Mạng Công Nghệ Cung Hoàng Đạo Cường Đô La Đàm Vĩnh Hưng Đàn Ông Đặng Thu Thảo dang-mieng Đĩa Bay Diễm My 9x Điện Ảnh Diệp Lâm Anh Đỗ Mạnh Cường Đời Sống doi-song Đông Nhi Đồng Tính Động Vật Du Lịch Đức Phúc fashion Gay Giảm cân Giáo Dục Giới Trẻ Hồ Ngọc Hà Hoa Hậu Hòa Minzy Hoài Linh Hoàng Thùy Linh Học Tiếng Anh hoc-duong Hot News HotNews Hương Giang Idol Hương Tràm Huỳnh Hiểu Minh Issac Jennifer Phạm Jessica Minh Anh Kenbi Khánh Phạm Khám Phá kham-pha Khánh Hiền Khmer News khoa-hoc khoa-hoc-cong-nghe Khoảnh Khắc Lan Khuê Lazada Lê Xuân Tiền Lều Phương Anh Linh Nga Lý Hải Mai Phương Thúy Maria Ozawa Mẹo Vặt Midu Minh Hằng Miu Lê Món ngon mỗi ngày Mọt Phim Musik Mỹ Linh Mỹ Tâm News Ngô Kiến Huy Ngọc Trinh Người ngoài hành tinh Nhật Kim Anh Những chuyện kỳ quặc trên thế giới Những hiện tượng bí ẩn và khó hiểu Những người có khả năng đặc biệt Noo Phước Thịnh Ốc Thanh Vân oto-xe-may Phạm Băng Băng Phạm Hương Phẫu Thuật Thẩm Mỹ Phong cách Phượng Channel Pokémon Go Quang Dũng Sao Shopping Sĩ Thanh Sơn Tùng M-TP sport Star Sức Khỏe suc-khoe suc-khoe-gioi-tinh Tâm Linh Tâm Sự Tăng Thanh Hà Taylor Swift Thanh Hằng Thành Lộc Thanh Thảo The Face - Gương mặt thương hiệu Thể Hình The Remix – Hòa Âm Ánh Sáng the-gioi Thời Trang Thu Minh Thu Phương Thượng Ẩn Thúy Nga Tin Nổi Bật Tin Nóng Tin Thế Giới Tin Trong Nước Tình Yêu Tom Cruise Trà Ngọc Hằng Trấn Thành Trường Giang Trương Nam Thành Tử Vi tv-show UFO Ung Thư Video Việt Hương Vietnam's Next Top Model Vĩnh Thụy Võ Cảnh Võ Hoàng Yến Vũ Khắc Tiệp Vũ Ngọc Anh Vũ Ngọc Đãng xa-hoi xe xo-gan Xu Hướng - Làm Đẹp
false
ltr
item
GIẢI TRÍ SAO 24H: NASA Satellite Takes Incredible Video Of Ancient North Star Eclipse
NASA Satellite Takes Incredible Video Of Ancient North Star Eclipse
https://mysteriousuniverse.org/wp-content/uploads/2020/01/Stars-643x440.jpg
GIẢI TRÍ SAO 24H
https://www.giaitrisao24h.com/2020/01/nasa-satellite-takes-incredible-video.html
https://www.giaitrisao24h.com/
https://www.giaitrisao24h.com/
https://www.giaitrisao24h.com/2020/01/nasa-satellite-takes-incredible-video.html
true
5412201294335186192
UTF-8
Not found any posts VIEW ALL Readmore Reply Cancel reply Delete By Home PAGES POSTS View All BÀI CÙNG CHỦ ĐỀ LABEL ARCHIVE SEARCH Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago