Astronomers said 'Betelgeuse Betelgeuse Betelgeuse' and a new star appeared! | Particle ‘Astronomers find a new star’ might not sound like the most exciting headline ever, but trust me on this one.

The Betelgeuse star now has a friend. Read the full story here: particle.scitech.org.au/space/astron...

#Betelgeuse #companionstar #variablestar

One of the brightest Cepheid variable stars in the sky is . . . Eta Aquilae! Never heard of it? It's located 8° due south of Altair and pulses from magnitude 4.3 to 3.4 and back every 7.18 days.
skyandtelescope.org/astronomy-ne...
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#astrononmy #aquila #stargazing #variablestar #cepheid

Hubble Space Telescope image of Mira, a red giant star 700 times larger than our sun, showing its pulsating surface and a mysterious extended feature. Discovered 401 years ago, Mira is one of only a few stars to have its surface resolved. The extended feature may be due to gravitational perturbation or heating from its white dwarf companion.

Astronomy Picture from 11/10/1998

Resolving Mira

Source: https://apod.nasa.gov/apod/ap981011.html


#Mira #RedGiant #VariableStar #HubbleSpaceTelescope #Astronomy #Astrophysics #Stars #Space #Cosmology

Nighttime long exposure photograph of Mira, a variable red giant star near its peak brightness, in the constellation Cetus, over a castle in Stuttgart, Germany. Mira's brightness varies dramatically over a year, making it appear as a "new" star at times. This image shows Mira at magnitude 2. The star is nearing the end of its life and is over 10,000 times more luminous than our Sun.

Astronomy Picture from 21/02/2007

Mira Over Germany

Source: https://apod.nasa.gov/apod/ap070221.html


#Mira #VariableStar #RedGiant #Astronomy #NightSky #Stars #Cetus #Stuttgart #Germany #Space #Cosmology #AstroPhotography #DeepSky

Two images of V838 Monocerotis, a variable star, taken in May and September 2002 by the South African Astronomical Observatory. The images show the star's dramatic transformation and the expansion of its surrounding light echo nebula. The nebula is a result of light reflecting off shells of material ejected by the star, offering a glimpse into its history. The star's behavior defies conventional understanding of stellar life cycles.

Astronomy Picture from 03/10/2002

V838 Mon: Mystery Star

Source: https://apod.nasa.gov/apod/ap021003.html


#V838Monocerotis #MysteriousStar #LightEcho #StellarEvolution #Astronomy #Space #Astrophysics #VariableStar #Nebula #Cosmology

A nighttime long exposure photograph shows the variable star Mira near its maximum brightness, magnitude 2, above a castle in Stuttgart, Germany. Mira, a red giant star near the end of its life, is roughly the same mass as our Sun but far more luminous. Its atmosphere extends beyond the orbit of Mars. Mira's brightness varies significantly throughout the year.

Astronomy Picture from 21/02/2007

Mira Over Germany

Source: https://apod.nasa.gov/apod/ap070221.html


#Mira #VariableStar #RedGiant #NightSky #Astronomy #Stargazing #Cetus #Stuttgart #Germany #Space #Cosmology #Stars

Stunning Hubble Space Telescope image of Hubble's Variable Nebula (NGC 2261), a reflection nebula in Monoceros. Its appearance changes over weeks due to opaque dust clouds orbiting the central star R Monocerotis, casting shifting shadows. The nebula is approximately one light-year across and located about 2500 light-years away.

Astronomy Picture from 08/11/2017

NGC 2261: Hubble's Variable Nebula

Source: https://apod.nasa.gov/apod/ap171108.html


#HubbleVariableNebula #NGC2261 #ReflectionNebula #RMonocerotis #SpaceTelescope #Astrophysics #Cosmology #Astronomy #VariableStar #Nebulas #DeepSpace #Space #Universe

Light Echoes From Red Supergiant Star V838 Monocerotis - October 2004 Credits NASA, ESA and H.E. Bond (STScI)

By: hubblespacetelescope

https://hubblesite.org/home
unsplash.com/photos/a-star-cluster-in...


#nebula #outerSpace #cosmic #cosmos #variableStar #star #reflectionNebula #nova #redSupergiantStar #v838Monocerotis #hubbleTelescope #hubble #nasa