TYBs
NASA Astronomy Picture of the Day
April 28, 2026
CG 30: Cometary Globules
They're like mountain peaks, but they are forming stars. Bright-rimmed, flowing shapes gather near the center of this rich starfield toward the borders of the nautical southern constellations Puppis and Vela. Composed of interstellar gas and dust, the grouping of light-year sized cometary globules is about 1300 light-years distant. Energetic ultraviolet light from nearby hot stars has molded the globules and ionized their bright rims. The globules also stream away from the Vela supernova remnant which may have influenced their swept-back shapes. Within them, cores of cold gas and dust are likely collapsing to form low mass stars whose formation will ultimately cause the globules to disperse. In fact, cometary globule CG 30 (upper right in the group) sports a small reddish glow inside its head, a telltale sign of energetic jets from a star in the early stages of formation.
https://apod.nasa.gov/apod/astropix.html
https://www.youtube.com/watch?v=BV7px9MjLHo
Comet Tail Arrival, Severe Alert, Magnetic Life | S0 News and frens
Apr.28.2026
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https://earthquake.usgs.gov/earthquakes/map/
https://www.volcanodiscovery.com/earthquakes-volcanoes/news/300866/Volcano-earthquake-report-for-Tuesday-28-Apr-2026.html
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Watch comet PANSTARRS 'switch on' its second tail as it makes closest approach to Earth
April 27, 2026
A sungazing spacecraft captured spectacular views of Comet C/2025 R3 (PanSTARRS) as its ion tail appeared to "switch on" and swing away from the sun during a close approach to Earth on April 26.
Comet C/2025 R3 was discovered in September 2025 and quickly stirred up excitement among the comet-chasing community during its rush toward the sun, with some wondering if PanSTARRS could brighten enough to be the great comet of 2026.
The wandering comet put on an impressive show in the weeks leading up to its brush with the sun during perihelion on April 19.
It then went on to dazzle stargazers in spacecraft imagery around perigee, when the icy wanderer passed closest to Earth in its seemingly one-off orbit, before cutting a return path to the outer regions of the solar system.
The joint NASA/ESA Solar and Heliospheric Observatory (SOHO)'s coronograph, an instrument that blocks out the light of the sun's bright disk, captured impressive imagery of Comet PanSTARRS' ion tail brightening as it soared past the sun.
This narrow tail shifted to stream directly away from the sun, in contrast to the broader, dust-laden primary tail.
Why does comet PanSTARRS have two tails?
Comets develop tails as they approach the sun and heat up. Solar radiation causes material locked inside the comet's solid nucleus to escape through a process called sublimation, releasing dust and gas into space.
The heavier dust particles are pushed back by sunlight, forming a broad, often curved tail that reflects sunlight according to Swinburne University of Technology.
A comet's dust tail can stretch for millions of miles and is very good at reflecting sunlight, sometimes making comets shine bright enough to be seen by the naked eye, while appearing visually spectacular in long exposure photography!
At the same time, ultraviolet radiation from the sun strips electrons from gas molecules in the comet's coma — a process known as ionization. These charged particles are then caught up in the solar wind,creating a second, straighter tail.
The ion tail always points away from the sun, driven as it is by the solar wind, which travels at hundreds of kilometers per second, while the larger particles that make up the dust tail move at a slower pace, and so lags behind its ion counterpart as the comet moves around the sun.
https://www.space.com/stargazing/watch-comet-panstarrs-switch-on-its-second-tail-as-it-makes-closest-approach-to-earth
other space objects
https://watchers.news/2026/04/28/bright-green-fireball-buenos-aires-rio-de-la-plata-brazil-april-27-2026/
https://www.iflscience.com/a-one-in-170000-year-shot-blazing-fireball-photobombs-beautiful-image-of-comet-c2025-r3-panstarrs-83324
https://avi-loeb.medium.com/lets-send-ai-astronauts-not-humans-to-the-moon-ebb9aa5552f6
A Comet Passed the Sun… and We Missed It Here's the Footage
Apr 27, 2026
A comet passed close to the Sun… and almost no one on Earth saw it.
Hidden in the Sun’s glare, Comet C/2025 R3 (PANSTARRS) slipped through the inner solar system just days ago. From our perspective, it was nearly impossible to observe - lost in the brightness of the Sun.
But spacecraft didn’t miss it.
Using data from SOHO (LASCO C3) and STEREO-A (COR2 / HI2), we can track the comet as it moves away from the Sun, revealing a spectacular tail and its true path through space.
At the time of this footage:
The comet was ~87 million km from the Sun (~0.58 AU)
About ~73 million km from Earth
Its tail stretched over 12-14 million km
The leading edge of that tail was only ~60 million km away
We didn’t miss the comet…
We just couldn’t see it from here.
🌌 What you’re seeing
Coronagraph footage (Sun blocked to reveal faint objects)
The comet’s tail is shaped by the solar wind
A perspective that’s impossible from Earth
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If you enjoy real space data, astrophotography, and “what we don’t see from Earth,” you’re in the right place.
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