Stephen Hawking:
“We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special”
Carl Sagan:
“The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies was made in the interiors of collapsing stars. We are made of star stuff.”
Stephen Hawking:
“Look up at the stars and not down at your feet. Try to make sense of what you see, and wonder about what makes the universe exist. Be curious.”
The eruption in Merardalir in Icelad is a geat phenomena. See this video done by Martin Voigt, during the first 24 hours of this eruption.
Incredible !
You can see this video all the day, hundred of rotations... and will be amazing each one: Full rotation of the Moon as seen by NASA's Lunar Reconnaissance Orbiter. Wonderful !
It is difficult to imagine what happen when neutron stars collide, but the “new astronomy” can give us some clues: gravitational waves emission and gamma rays bursts !
Image Credit: MIT & NASA Goddard Center
Let me introduce you the Dolphin nebula Sh2-308. It surrounds a pre-supernova Wolf–Rayet star.
This image (by Aleix Roig
@astrocatinfo
@AstroSabadell
) is shortlisted to win the “Astronomy Photographer of the Year” award.
We need your vote in this link:
Extraordinary rotation of
#Mars
seen in 1999 by Hubble Space Telescope. You can see deserts, mountains, storms, craters, the polar cap and many wonderful details.
Messier 74 (NGC 628 “Phantom Galaxy”) is a large spiral galaxy, with a diameter of 95000 lightyears situated 32 million light-years far.
This image is a composite of HST (visual), Chandra (X-ray) and
@NASAWebb
(infrared):
To study better the interstellar object 1I/’Oumuamua: a proposed mission to be launch in 2028 with a 4 gravitational assistences and a Jupiter Oberth Manoeuvre (JOM) reaching the asteroid in 2054, with an arrival speed of 18 km s−1:
Illustration: NASA
It is difficult to imagine what happen when two neutron stars collide, but the “new astronomy” can give us some clues: gravitational waves emission and gamma rays bursts !
Image Credit: MIT & NASA Goddard Center.
A black hole is a region of spacetime where gravity is so strong that nothing can escape from it. The boundary of no escape is called the event horizon.
Illustration: ESO
It is -may be- the most iconic image of a nebula: The Pillars of Creation's columns.
This image is a composition of X-rays data by
@chandraxray
combined with JWST
@NASAWebb
's infrared light. A wonderful nebula with stars just born:
Jupiter “the king” of our Solar System has a big influence to all its members: planets, comets and the main belt asteroids.
Many asteroids are resonant, as the troyans.
See this wonderful animation via
@Tom_Ruen
and via
@Alan_Taylor_314
Titan has rivers, lakes, seas and deltas of ethane and methane, in a cycle similar to the water cycle on our planet, with rains of large drops that fall slowly due to the weak gravity of this moon of Saturn. An impressive world with temperatures of -180ºC.
Image: Cassini NASA/JPL
340 years ago was observed a “new” star in Cassiopeia…
Today we know it was a supernova in our own galaxy, 11000 lightyears far. The James Webb Space Telescope obtained recently this detailed image of this supernova remnant. Wonderful!
Wonderful
#Jupiter
animation based on
#NASA
#Juno
images, showing the quick movement of bands, ovals and other details, as the famous dophin...Via
@MeteoBarrufet
Saturn's strange moon Iapetus has two sides with completely different albedo and a strange mountain range that runs through the satellite.
Images: Cassini
NGC 1672: a spiral galaxy with a large bar of 20 kpc, with strong radio emissions & a Seyfert nucleus with a starburst region. It’s situated 50 million lightyears far!
This image is a composite of HST (visual), Chandra (X-ray) and
@NASAWebb
(infrared):
This video of the full rotation of the moon has a hypnotic power: you can stare at it for a long time motionless. Astronomy has great power in our minds and motivations.
Video by NASA’s Lunar Reconnaissance Orbiter via Universal-Sci
In our galaxy Milky Way there are, may be, 400000000000 stars, mainly weak “brown dwarfs” but -according a census- only 642 Hyperluminous uncommon Wolf Rayet stars!
Image: Wolf Rayet binary star WR140 by James Webb Space Telescope
This is a very speculative animation of a black hole consuming a star. Please dont think it is an accurate model: just it’s a nice animation for pedagogical purposes.
Credit: NASA Goddard
Near-infrared view of Uranus with rings and some of its moons, obtained with the the 8.2-m VLT telescope ESO Paranal.
Seven of the moons of Uranus can be identified: Titania and Oberon are the brightest. The much smaller and fainter Puck and Portia are barely visible.
NGC 346 is a stunning beautiful young open cluster with a nebula in the Small Magellanic Cloud, 210000 lightyears distant.
This image combine data from NASA’s Chandra X-ray Observatory and James Webb Space Telescope:
Detail of just a part of the ring of M57 “Ring Nebula” the archetypal of a planetary nebula.
This amazing image has been done by the James Webb Space Telescope with its NIRCam Camera.
See the intricate details in this image!
You can see this video all the day, hundred of rotations... and will be amazing each one: Full rotation of the Moon as seen by NASA's Lunar Reconnaissance Orbiter.
Incredible video of an annular solar eclipse by Phobos seen from the Mars surface by NASA’s Perseverance rover.
Wonderful !
It’s clearly visible the shape of Phobos, one of the two moons of Mars.
Carl Sagan:
“The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies was made in the interiors of collapsing stars. We are made of star stuff.”
A wonderful image of
#Jupiter
taken by
#Juno
spacecraft. Incredible the details we can see in its atmosphere !
Image credit: NASA / JPL-Caltech / SwRI / MSSS / David Marriott
Nice
#Galaxy
group NGC 7331, in Pegasus, with a prominent spiral is situated 40 million lightyears from us.
Image done by Lluis Romero, an expert in astrophotography, member of
@astrosabadell
.
He has not a twitter account but you can see his works here:
You can see this video all the day, hundred of rotations... and will be amazing each one: Full rotation of the Moon as seen by NASA's Lunar Reconnaissance Orbiter.
You can see this video all the day, hundred of rotations... and will be amazing each one: Full rotation of the Moon as seen by NASA's Lunar Reconnaissance Orbiter.
Carl Sagan:
“We wish to pursue the truth no matter where it leads — but to find the truth, we need imagination and skepticism both. We will not be afraid to speculate, but we will be careful to distinguish speculation from fact”.
Intrincate structures in the atmosphere of
#Jupiter
as seen by the NASA’s
#Juno
spacecrat orbiting currently our “big brother”
Image processed by Kevin M. Gill.
Wonderful !
NASA’s Curiosity rover gave us in 2016, the possibility to see this wonderful Mars landscape: mountains, deserts, some craters... extreme beauty, but not life at all...
Enjoy it !!
Via
@HarryStoltz1
Astronomers from University of Warsaw used 65,981 Mira variable stars to trace the shape of the Milky Way and found evidence for both the X-shaped bulge component and the flaring disk (being plausibly warped):
Image: The Milky Way warping by Univ of Warsaw
In the next 7000 million years the sun will expand to be a red giant. Our planet sure will be not habitable… In this scenario, Europa, Enceladus & Titan will be in the new habitable zone with temperate temp… will humans, if still exist, move to them?
Image: Astronomy Roen Kelly
The largest volcano and mountain in the entire solar system, Olympus Mons is located in Mars.
It is 25 km (16 mi) high!! with a diameter which makes about the same size as France.
Images:
This is probably the best image I have ever seen of:
-the solar corona
-a total solar eclipse
-the moon details seen in an eclipse image
Incredible!
Credit:
@SeVoSpace
Sebastian Voltmer
Stephen Hawking:
“We are each free to believe what we want and it is my view that the simplest explanation is there is no God. No one created the universe and no one directs our fate. This leads me to a profound realization.”
Enceladus is a 500km diameter satellite of Saturn -190 C temperature.
In 2005 Cassini discovered in the S pole, water-rich geyser-like plumes, cryovolcanoes, venting water vapor, hydrogen, sodium chloride crystals and ice particles, totaling about 200 kg/sec.
Image: Cassini
Albert Einstein
“If relativity is proved right the Germans will call me a German, the Swiss will call me a Swiss and the French, a great scientist.
If it’s proved wrong the French will call me a Swiss, the Swiss will call me a German and the Germans will call me a Jew.”
Next Monday, January 24th, the James Webb Space Telescope will start orbiting around Lagrange L2, 1,5million Km away. There, the gravity of the sun and Earth form an stability area where
#JWST
will work from a very stable position.
Credit: NASA
WHAT IS OUR GALAXY SHAPE?
The
#MilkyWay
is a barred spiral
#galaxy
with more than 200000 million stars… our sun is 30000 lightyears from the center where is a black hole.
Sun's Galactic rotation period is about 240 M years!
Image: Illustration by R.Hurt, JPL-Caltech, NASA
Incredible image of
#Jupiter
made by the Hubble Space Telescope (HST) last August, 25th.
Incredible colour, details and... you can see also the moon Europa at left.
Wonderful !
Titan has rivers, lakes, seas and deltas of ethane and methane, in a cycle similar to the water cycle on our planet, with rains of large drops that fall slowly due to the weak gravity of this moon of Saturn…
According to current knowledge, what is the age estimation of…
1) Universe: 13770 million years
2) Older star in Milky Way: 13000 million years
3) Sun: 4600 million years
4) Earth: 4500 million years
Illustration: NASA
See in this GIF an unnusual variable star, V838 Mon, that exploded doing several bursts. It could be observed by amateurs with just a small telescope. The GIF has been done adding several images by the Hubble Space Telescope.
Extraordinary rotation of
#Mars
seen in 1999 by Hubble Space Telescope. You can see deserts, mountains, storms, craters, the polar cap and many wonderful details.
NASA and ESA have started planning for future mission to Uranus and Neptune, still without any concrete project. Both agencies focus on a mass spectrometer to measure in situ the atmospheric composition:
Images: Neptune Voyager2 images nearly 35 years ago
There are rumors that new astrobiology findings will be released tomorrow by Nature magazine.
They could refer to some evidences of microbe life in the clouds of Venus.
It’s just a rumor, excuse me if it’s not true...
More info... tomorrow
Image: JAXA
Jupiter’s large rotating storms imaged by NASA’s Juno probe last Nov. 29, 2021.
Kevin M. Gill processed the image to enhance the color and contrast, using raw JunoCam data.
Juno info:
Neptune storms !
Remembering wonderful images taken by Voyager 2 in 1989 showing the dark spot and many bright features, white clouds, in Neptune’s atmosphere.
Credit: NASA Voyager 2 team
Today, 59 years ago, cosmonaut Yuri Gagarin, in the Vostok rocket, was the first human to fly in space. He did a complete orbit around Earth in a 108 minutes.
“I don’t see any god here”
“I see Earth! It is so beautiful!”
Video from
@CaliaDomenico
The rotation of Jupiter is huge: only 10 hours with jet speeds reaching 100 m/sec.
It’s huge for a planet with a diameter of 140000 km !
The jets divide Jupiter’s clouds into distinctive bands, as seen in this old NASA’s Voyager animation:
Three asteroid belts around the star Fomalhaut!!
According this infrared image by James Webb Space Telescope, this star has 3 belts including 2 never-before-seen inner belts. The external one seems to be a bigger version of our own Kuiper belt!:
#Jupiter
red spot is reducing its size but it is still the biggest storm in our Solar System by far. It is formed by water and ammonia clouds. The GIF provided below was obtained by
#NASA
#Juno
spacecraft. The images were processed by Justin Cowart
Extraordinary rotation of
#Mars
seen in 1999 by Hubble Space Telescope. You can see deserts, mountains, storms, craters, the polar cap and many wonderful details.
An incredible image of Comet Leonard taken by Daniele Gasparri from Atacama desert in Chile with a 20 degrees tail and a disconnection close to the coma.
Equipment: Sony A7S camera with 105 mm f2.8 lens and averaged 48 images of 30 sec

Author’s website:
Carl Sagan:
“Our planet is a lonely speck in the great enveloping cosmic dark. In our obscurity, in all this vastness, there is no hint that help will come from elsewhere to save us from ourselves.”
Iris Nebula, Caldwell 4, is a reflection nebula 1500 light-years far, close to an open cluster. Its light is reflecting remaining gas and dust after the birth of its central star.
Image: 3.5 hours CMOS by Jaume Zapata from our upgraded
#Anysllum
#observatory
@AstroSabadell
The James Webb Space Telescope obtained this wonderful image of NGC 7469, a face-on spiral galaxy 90000 light-years in diameter, 220 million light-years distant with an active galactic nucleus (AGN).
Image by JWST MIRI, NIRCam and NIRspec instruments.
The Elephant's Trunk Nebula is a concentration of interstellar gas and dust about 2,400 light years distant. It’s a site of star formation containing some less than 100,000 years old!!
Image: Lluis Romero
@AstroSabadell
member.
Wonderful video of Venus planet in the ultraviolet from the japanese JAXA’s Akatsuki probe. The planet’s thick atmosphere make not possible to see the Venus surface. Only done by soviet landers and by radar. Credit: JAXA/Akatsuki/ISAS/DARTS/Damia Bouic
Tarantula nebula is situated 170000 lightyears far in the Large Magellanic Cloud, a satellite galaxy of our Milky Way. In this video we see a wonderful zoom to this nebula with last images done by the James Webb Space Telescope, revealing new structures.
The rotation of Jupiter is huge: only 10 hours with jet speeds reaching 100 m/sec.
It’s huge for a planet with a diameter of 140000 km !
The jets divide Jupiter’s clouds into distinctive bands, as seen in this Juno’s wonderful image, processed by David Marriott.
@NASAJuno
Wonderful Comet C/2021 A1 Leonard just today, Dec. 21
See the incredible details seen in its tale… Image by
@MichaelMattiazz
. More details about the image in left side of it. Congrats Michael Mattiazzo!
Pic via
@astrocatinfo
The most volcanic object in our Solar System is Io, a moon of Jupiter severy affected by tidal forces from the biggest planet in our Solar System.
Here some general images and close-up ones done by Galileo probe.
This extraordinary image of M51 spiral galaxy is the Astronomy Picture of the Day of Sept. 2nd. It is 31 million lightyears distant and has a mass of 160 billion suns...
This is the twelfth image of Josep M Drudis, member of
@astrosabadell
, published on the NASA APOD website!!
April, 12th 1961 the first man in the space...
Yuri Gagarin:
“Orbiting Earth in the spaceship, I saw how beautiful our planet is. People, let us preserve and increase this beauty, not destroy it!”