Nature of Terrestrial Planet (地球型惑星の自然) @TaTohru

Happy #SunDay! This week’s space weather report includes: · 28 M-class flares · 6 C-class flares · 39 coronal mass ejections · 1 geomagnetic storm This video from NASA’s Solar Dynamics Observatory shows the week’s activity. Learn more about solar flares: go.nasa.gov/3m9w4p4

This butterfly in space is anything but delicate! 🦋 In 2009, Hubble imaged planetary nebula NGC 6302, which formed after the death of a star or pair of stars. Its “wings” are the result of hot gas traveling at up to 1 million miles (2 million km) an hour: bit.ly/4943FDE

Boo! 👻 This ghostly view from Hubble shows NGC 6684, an eerie lenticular galaxy about 44 million light-years away. It lacks dark lanes of dust, which sometimes spread through galaxies, which only adds to its ghost-like appearance: go.nasa.gov/3UBdXpF #HubblesWildest

Hubble's bubble! 🫧 This blue "bubble" surrounding a massive, late-stage star is called a Wolf-Rayet nebula. It was created when speedy stellar winds interacted with the outer layers of hydrogen ejected from the star! For more on this #HubbleClassic: go.nasa.gov/44abHKc

Galactic besties 🌀 The spiral galaxy in this week's #HubbleFriday image is NGC 5996. Beneath it to the left is a smaller companion galaxy called NGC 5994. Together, this pair is known as Arp 72. They're both about 160 million light-years from Earth: go.nasa.gov/43HJhHn

In the largest @NASAHubble program ever executed, scientists collected information on ~500 stars over a three-year period. Now they're ready to dive into the data to glean new insights into the stars' formation, evolution and impact on their surroundings: go.nasa.gov/3ISGtNY

What created this unusual celestial firework? The nebula, dubbed Pa 30, appears in the same sky direction now as a bright "guest star" did in the year 1181. Although Pa 30's filaments look similar to that created by a nova (for example GK Per), and a planetary nebula (for example…

A field of stars ✨ This week's #HubbleFriday image features the globular star cluster NGC 1651. Globular clusters are roughly spherical groups of stars held together by their mutual gravity. NGC 1651 is located about 162,000 light-years away: go.nasa.gov/3TYRy6x

One of the challenges of searching for life in the universe is deciding on a definition for what life actually is. What do you think has caused the most trouble in trying to define life? Vote in our #AskAstrobio poll & watch our live show on March 29: youtube.com/channel/UC14eJ…

🎆Enjoy this 800-year-old firework spectacle, created by a supernova explosion Brough to you by a super telescope team: @ESA_XMM, @chandraxray, the @WISE_Mission, and the Hiltner and Pan-STARRS ground-based telescopes #ExploreFarther 👉esa.int/ESA_Multimedia…

Stages of starbirth unfold in this #HubbleClassic view of N11B. The stars near the left have stellar winds that blow away nearby gas, which collides with nearby dense clouds that can collapse under their own gravity and start to form new stars: go.nasa.gov/49aQG2W

It’s easy to see why NGC 1427A is classified as an irregular galaxy. Its odd arrowhead shape is a result of gas pressure and gravitational forces as it plunges into a group of galaxies at about 1.5 million miles per hour (700 km/s): bit.ly/3SYbOom

Not all galaxies spiral! This small irregular dwarf galaxy, I Zwicky 18, is located 59 million light-years away. Two bursts of star formation lie at its heart, surrounded by wispy bubbles of gas formed by winds and radiation from hot, young stars within. esawebb.org/images/potm240…

The Leo Trio This popular group leaps into the early evening sky around the March equinox and the northern hemisphere spring. Famous as the Leo Triplet, the three magnificent galaxies found in the prominent constellation Leo gather here in one astronomical field of view. Crowd…

Today is 3.14 – AKA #PiDay, celebrating the mathematical constant of the ratio of a circle’s circumference to its diameter. This celestial "circle" seen by Hubble is actually the Bubble Nebula, located about 7,000 light-years away: go.nasa.gov/3Vkj3sk

Portrait of NGC 1055 Big, beautiful spiral galaxy NGC 1055 is a dominant member of a small galaxy group a mere 60 million light-years away toward the aquatically intimidating constellation Cetus. Seen edge-on, the island universe spans over 100,000 light-years, a little larger…

Happy #JewelDay! 💎 Hubble observed a glittering piece of cosmic "jewelry" located 15,000 light-years away. Aptly nicknamed the Necklace Nebula, it was created by a pair of aging, tightly orbiting Sun-like stars that cast off an escaping ring of debris: go.nasa.gov/49QgpPk

Five and a half million years ago, this star cluster was born. Named NGC 6611, this open cluster contains hot, blue stars loosely grouped together by their mutual gravity. Read more about this #HubbleClassic view: go.nasa.gov/3IzcPx6

🆕 New images from the NASA/ESA/CSA James #Webb Space Telescope’s NIRCam and MIRI instruments show the star-forming region NGC 604 and how stellar winds from bright, hot young stars carve out cavities in surrounding gas and dust.

Edge-on spiral galaxies like NGC 4013 have a beauty all their own. This Hubble image showcases a thick band of dust that appears to split the galaxy in two, and young star clusters that shine blue near the image’s center: bit.ly/49t6Jto