Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

A Star Just Exploded in The Sky, And It Is Easy to Observe
sciencealert.com ^ | 23 MARCH 2021 | MICHELLE STARR

Posted on 03/24/2021 6:45:07 PM PDT by BenLurkin

According to reports in The Astronomer's Telegram, a star in the region of the constellation of Cassiopeia has just gone nova, and the glow is still visible in the night sky. If you live in the Northern Hemisphere and have even a basic telescope, you might want to head out and point it in that direction.

The first detection was made on 18 March 2021 by amateur astronomer Yuji Nakamura from the Mie Prefecture in Japan. In four frames captured using a 135-millimeter lens and a 15-second exposure, a bright, magnitude 9.6 glow was visible where none had been just four days earlier.

The find was quickly reported to the National Astronomical Observatory of Japan, and scientists zeroed in to find out what was going on.

Using Kyoto University's Seimei Telescope, astronomers at the NAOJ and Kyoto University conducted spectroscopic observations, and used the 0.4-meter telescope at Kyoto University for multi-color photometric observations.

They confirmed that the event is indeed what we classify as a classical nova, the most common of the stellar explosions, and gave it the name V1405 Cas.

A classical nova is not the huge kaboom of a massive star, but an explosion on the surface of a white dwarf with a main-sequence binary companion on a close orbit - generally less than 12 hours. As the two stars whirl around each other, the tiny dense white dwarf siphons hydrogen from its larger, fluffier companion.

(Excerpt) Read more at sciencealert.com ...


TOPICS: Astronomy; Science
KEYWORDS: astronomy; cassiopeia; didyousearch; nova; nvj232447606111140; science; v1405cas
Navigation: use the links below to view more comments.
first 1-2021-26 next last

1 posted on 03/24/2021 6:45:07 PM PDT by BenLurkin
[ Post Reply | Private Reply | View Replies]

To: BenLurkin

End of Times confirmed...

Beam me up into the clouds


2 posted on 03/24/2021 6:46:27 PM PDT by Bayard
[ Post Reply | Private Reply | To 1 | View Replies]

To: MtnClimber; SunkenCiv

ping


3 posted on 03/24/2021 6:47:06 PM PDT by BenLurkin (The above is not a statement of fact. It is either opinion, or satire. Or both.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: BenLurkin

Thanks for the info.


4 posted on 03/24/2021 6:47:17 PM PDT by the OlLine Rebel (Common sense is an uncommon virtue./Federal-run medical care is as good as state-run DMVs. I )
[ Post Reply | Private Reply | To 1 | View Replies]

To: BenLurkin

We’re all gonna die.


5 posted on 03/24/2021 6:49:29 PM PDT by Gahanna Bob
[ Post Reply | Private Reply | To 1 | View Replies]

To: BenLurkin

Just exploded my a$$.

How many years ago did this explode ? Maybe 10 years ago.


6 posted on 03/24/2021 6:50:50 PM PDT by George from New England
[ Post Reply | Private Reply | To 1 | View Replies]

To: Gahanna Bob

Women, children and minorities hit hardest.


7 posted on 03/24/2021 6:51:20 PM PDT by YOMO
[ Post Reply | Private Reply | To 5 | View Replies]

To: George from New England

5,500 years ago.
Back when satan tricked Eve.


8 posted on 03/24/2021 6:51:58 PM PDT by George from New England
[ Post Reply | Private Reply | To 6 | View Replies]

To: BenLurkin

Rats. We’ve got cloud cover and fog.


9 posted on 03/24/2021 6:51:59 PM PDT by Jamestown1630 ("A Republic, if you can keep it.")
[ Post Reply | Private Reply | To 1 | View Replies]

To: George from New England

It exploded more like 5,500 years ago.


10 posted on 03/24/2021 6:55:48 PM PDT by exDemMom (Current visual of the hole the US continues to dig itself into: http://www.usdebtclock.org)
[ Post Reply | Private Reply | To 6 | View Replies]

To: BenLurkin

I thought that I’m going to hear something!


11 posted on 03/24/2021 6:59:00 PM PDT by ALASKA (Trump will win resoundingly, but it's not going to be pretty. )
[ Post Reply | Private Reply | To 1 | View Replies]

To: exDemMom

Yup, 5.000 years ago, but we are just seeing it now. For all we know, it might not even exist anymore. That’s kind of mind blowing.


12 posted on 03/24/2021 7:00:22 PM PDT by fidelis (Zonie and USAF Cold Warrior)
[ Post Reply | Private Reply | To 10 | View Replies]

To: George from New England
How many years ago did this explode ? Maybe 10 years ago.

"The eclipsing variable (binary) star CzeV3217, which lies at an approximate distance of 5,500 light-years from the Solar System."

So we can surmise that the actual event we are seeing now happened at least 5500 years ago.

13 posted on 03/24/2021 7:02:33 PM PDT by JaguarXKE (Liberalism is a cancer on our nation.)
[ Post Reply | Private Reply | To 6 | View Replies]

To: JaguarXKE

The more I read about those 5 stars reveals that the constellations we see are only those patterns when viewed from here, aka our solar system. All five of the stars are at radically different distances and have no relationship to each other, other than ‘appearing together’ from solely our vantage point. How often do we even think about it that way. So the big dipper is not really close stars in real space.


14 posted on 03/24/2021 7:13:26 PM PDT by George from New England
[ Post Reply | Private Reply | To 13 | View Replies]

To: George from New England

There are no close stars in real space.


15 posted on 03/24/2021 7:15:04 PM PDT by Notforprophet (Don't Tread On Me)
[ Post Reply | Private Reply | To 14 | View Replies]

To: George from New England
Back when satan tricked Eve ... to vote Democrat
16 posted on 03/24/2021 7:17:35 PM PDT by SecondAmendment (This just proves my latest theory ... LEFTISTS RUIN EVERYTHING !)
[ Post Reply | Private Reply | To 8 | View Replies]

To: BenLurkin
Magnitude 9.6? In theory a person can see down to the 6th magnitude with the naked eye. If you live in a city you are lucky if you can see 3rd and 4th magnitude stars. I think 5 magnitudes represents 100 times difference in brightness, so a magnitude 9.6 star would be 1/100th as bright as a 5.6 magnitude star. So you probably need a small telescope and a clear sky away from any cities to see this nova. But maybe it will get much brighter.

The Iceman had not been born yet when this nova exploded.

17 posted on 03/24/2021 7:18:08 PM PDT by Verginius Rufus
[ Post Reply | Private Reply | To 1 | View Replies]

To: BenLurkin

Cassiopeia has had bigger fireworks...a supernova or two.


18 posted on 03/24/2021 7:22:30 PM PDT by Buttons12 ( )
[ Post Reply | Private Reply | To 1 | View Replies]

To: George from New England

You will hear it in about 6 x 10^11 years.


19 posted on 03/24/2021 7:23:04 PM PDT by freedumb2003 (No matter what, resist and stop the agenda of blow bidet and hairass the whore)
[ Post Reply | Private Reply | To 6 | View Replies]

To: Gahanna Bob

The only way to counter this and save ourselves is with a one world government.


20 posted on 03/24/2021 7:24:52 PM PDT by Eddie01
[ Post Reply | Private Reply | To 5 | View Replies]


Navigation: use the links below to view more comments.
first 1-2021-26 next last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson