#Tag
Listen to This Month’s ‘Planetary Parade’ With NASA’s Chandra https://www.nasa.gov/missions/chandra/listen-to-this-months-planetary-parade-with-nasas-chandra/ #NASA #ChandraXRayObservatory #Astrophysics #Jupiter #MarshallAstrophysics #MarshallSpaceFlightCenter #Planets #Saturn #ScienceResearch #Sonifications #TheSolarSystem #Uranus
Listen to This Month’s ‘Planetary Parade’ With NASA’s Chandra https://www.nasa.gov/missions/chandra/listen-to-this-months-planetary-parade-with-nasas-chandra/ #NASA #ChandraXRayObservatory #Astrophysics #Jupiter #MarshallAstrophysics #MarshallSpaceFlightCenter #Planets #Saturn #ScienceResearch #Sonifications #TheSolarSystem #Uranus
It’s theorized that Earth’s first moon was a Mars-sized planet, named Theia.
And that their gravity pulled them together, obliterating Theia during the collision and forcing Earth into its 23° axis. The birth of our seasons.
For a brief period we had two moons, before one was absorbed by Earth. Our current moon remained.
It’s a scientific hypothesis, not fact. But a fascinating possibility all the same.
APOD from 2026-02-24
#Planet Parade over Sydney Opera House
This week, just after sunset, #Mercury, #Venus, #Saturn, and #Jupiter are visible to the naked eye in a line from the horizon. #Uranus and #Neptune can be seen with a #telescope. Best viewed this weekend globally along the ecliptic plane.
HD image at https://apod.nasa.gov/apod/ap260224.html#space #astronomy #planets #earth
APOD from 2026-02-24
#Planet Parade over Sydney Opera House
This week, just after sunset, #Mercury, #Venus, #Saturn, and #Jupiter are visible to the naked eye in a line from the horizon. #Uranus and #Neptune can be seen with a #telescope. Best viewed this weekend globally along the ecliptic plane.
HD image at https://apod.nasa.gov/apod/ap260224.html#space #astronomy #planets #earth
For #life to develop on a #planet, certain chemical elements are needed in sufficient quantities.
#Phosphorus is vital for the formation of DNA and RNA, which store and transmit genetic information, and for the energy balance of cells.
#Nitrogen is an essential component of proteins, which are needed for the formation, structure, and function of cells.
Without these two elements, no life can develop out of lifeless matter but there are also more profound consequences.
During the formation of a #planet's core, there needs to be exactly the right amount of oxygen present so that phosphorus and nitrogen can remain on the surface of the planet.
This was exactly the case with Earth around 4.6 billion years ago—a stroke of chemical good fortune in the #universe.
When #planets form, they initially develop out of molten rock.
A sorting process occurs during this time: heavy metals such as iron sink down and form the core, while lighter metals form the mantle and the crust.
If there is too little #oxygen present during the formation of the core, phosphorus will fuse with heavy metals such as iron and move to the core.
This element is then no longer available for the development of life.
On the other hand, too much oxygen present during core formation leads to phosphorus remaining in the mantle and #nitrogen being more likely to escape into the #atmosphere, ultimately being lost.
#astronomy #astrobiology
https://phys.org/news/2026-02-small-planets-suitable-life.html
Paper by Walton et al. (2026):
https://www.nature.com/articles/s41550-026-02775-z
For #life to develop on a #planet, certain chemical elements are needed in sufficient quantities.
#Phosphorus is vital for the formation of DNA and RNA, which store and transmit genetic information, and for the energy balance of cells.
#Nitrogen is an essential component of proteins, which are needed for the formation, structure, and function of cells.
Without these two elements, no life can develop out of lifeless matter but there are also more profound consequences.
During the formation of a #planet's core, there needs to be exactly the right amount of oxygen present so that phosphorus and nitrogen can remain on the surface of the planet.
This was exactly the case with Earth around 4.6 billion years ago—a stroke of chemical good fortune in the #universe.
When #planets form, they initially develop out of molten rock.
A sorting process occurs during this time: heavy metals such as iron sink down and form the core, while lighter metals form the mantle and the crust.
If there is too little #oxygen present during the formation of the core, phosphorus will fuse with heavy metals such as iron and move to the core.
This element is then no longer available for the development of life.
On the other hand, too much oxygen present during core formation leads to phosphorus remaining in the mantle and #nitrogen being more likely to escape into the #atmosphere, ultimately being lost.
#astronomy #astrobiology
https://phys.org/news/2026-02-small-planets-suitable-life.html
Paper by Walton et al. (2026):
https://www.nature.com/articles/s41550-026-02775-z
A new look at radar data for Venus obtained by NASA's Magellan spacecraft in the 1990s suggests a large underground cavity exists that was created by a lava flow, the first subsurface feature ever detected there. https://www.japantimes.co.jp/news/2026/02/10/world/science-health/radar-underground-lava-tube-venus/?utm_medium=Social&utm_source=mastodon #worldnews #sciencehealth #space #satellites #venus #planets #nasa
Get Ready For The Epochal Alignment Of 6 Planets in 2026!
Mark your calendars for late February 2026! Mercury, Venus, Mars, Jupiter, Saturn, and Neptune will align in a rare "planetary parade." This stunning celestial event will be visible shortly after sunset, with several planets appearing in a tight grouping near the western horizon.
#science #Astronomy #Stargazing #2026 #Space #NightSky #Planets
https://www.thefuturist.co/get-ready-for-the-epochal-alignment-of-6-planets-in-2026/
Get Ready For The Epochal Alignment Of 6 Planets in 2026!
Mark your calendars for late February 2026! Mercury, Venus, Mars, Jupiter, Saturn, and Neptune will align in a rare "planetary parade." This stunning celestial event will be visible shortly after sunset, with several planets appearing in a tight grouping near the western horizon.
#science #Astronomy #Stargazing #2026 #Space #NightSky #Planets
https://www.thefuturist.co/get-ready-for-the-epochal-alignment-of-6-planets-in-2026/
If Matter & Antimatter Were Created Equally, What Symmetry-Breaking Mechanism Allowed The Dominance Of Matter We Observe Today? Learn More: https://astronex.net/if-matter-antimatter-were-created-equally-what-symmetry-breaking-mechanism-allowed-the-dominance-of-matter-we-observe-today/
#space #astronomy #NASA #science #solarsystem #astro #nature #mars #esa #spacex #planets #spaceexploration
'Dracula's Chivito': Hubble reveals largest birthplace of planets ever observed
https://phys.org/news/2025-12-chaotic-dracula-chivito-hubble-reveals.html
#HackerNews #Chivito #Hubble #planets #astronomy #space #exploration #astrophysics
The parent body of asteroid Ryugu appears to have harbored water in the form of ice for over a billion years, Japanese researchers have found, in a discovery that could reshape ideas on how the Earth got its oceans. https://www.japantimes.co.jp/news/2025/09/11/japan/science-health/ryugu-asteroids-water-earth/?utm_medium=Social&utm_source=mastodon #japan #sciencehealth #hayabusa2 #space #astronomy #asteroids #planets #ryugu
APOD from 2025-08-27
WISPIT 2b: Exoplanet Carves Gap in Birth Disk
A Very Large #Telescope image reveals a young exoplanet carving a gap in its star's dusty protoplanetary disk, akin to our Solar System's formation. This first-ever observation of active planetary sculpting offers a glimpse into early #planet formation processes.
HD image at https://apod.nasa.gov/apod/ap250827.html#space #astronomy #earth #planets
APOD from 2025-08-23
Fishing for the #Moon
#Earth's Moon ranks 5th in size among Solar System moons, larger than #Pluto and Eris but 1/4 Earth's size. This photo captures the Full Moon rising over Italy's Adriatic Sea, seemingly small enough to be ensnared by an old fishing rig.
HD image at https://apod.nasa.gov/apod/ap250823.html#space #astronomy #planet #jupiter #saturn #neptune #planets
Hello #FediScience, migrating from astrodon.social (about to close), I am joining you here (inspired by @wolfgangcramer), so it's time for a new #Introduction
I'm Alexandre Santerne (call me Alex), #astronomer working @LAM_Marseille & teaching at Aix-Marseille #University (France).
I'm expert in finding #NoPlanetB 😀 ( #planets around other #stars).
I want to work in a #fair, #inclusive, and #sustainable #research #environment, so I (try to) act accordingly. I'm a member of @labos1point5
I toot a lot about #Astronomy, #Astrophysics, #Space but also a lot about #ClimateChange and #Climate.
Since 2019, I completely boycott planes, and I travel by #train (long distance) and #bike (short distance) as much as I can.
My other interests include #photography (visit my Flickr gallery in my profile) #Astronomy#Space
Oh, in case you don't know where Aix-Marseille is (trick: in 🇫🇷 ), the image below (credit: #NASA / JPL-Caltech / Space Science Institute) is indicating where I am, as seen from #Saturn...
... and where you also are, together with 8B people as part of 2M species 😀
Hello #FediScience, migrating from astrodon.social (about to close), I am joining you here (inspired by @wolfgangcramer), so it's time for a new #Introduction
I'm Alexandre Santerne (call me Alex), #astronomer working @LAM_Marseille & teaching at Aix-Marseille #University (France).
I'm expert in finding #NoPlanetB 😀 ( #planets around other #stars).
I want to work in a #fair, #inclusive, and #sustainable #research #environment, so I (try to) act accordingly. I'm a member of @labos1point5
I toot a lot about #Astronomy, #Astrophysics, #Space but also a lot about #ClimateChange and #Climate.
Since 2019, I completely boycott planes, and I travel by #train (long distance) and #bike (short distance) as much as I can.
My other interests include #photography (visit my Flickr gallery in my profile) #Astronomy#Space
Oh, in case you don't know where Aix-Marseille is (trick: in 🇫🇷 ), the image below (credit: #NASA / JPL-Caltech / Space Science Institute) is indicating where I am, as seen from #Saturn...
... and where you also are, together with 8B people as part of 2M species 😀
