A blue and gold squid-shaped galaxy glitters with other galaxies in this image from the NASA/ESA Hubble Space Telescope.
StarryCritters is all about seeing patterns in the stars. ESO 149-3 is an irregular galaxy that appears to be shaped like a squid with a dim smattering of stars hanging below. Irregular galaxies lack the shape and structure of more well known spiral and elliptical galaxies. They also tend to be much smaller. Nearly one-quarter of all galaxies are irregular galaxies. The Small and Large Magellanic Clouds, companions to our Milky Way Galaxy, are irregular galaxies. Blue stars in ESO 149-3 are hot young stars probably born as the galaxy interacted with another. Gold stars are older stars like our Sun.
ESO 149-3 is found fairly nearby at about 20 million light-years from Earth toward the southern constellation Phoenix. Zoom deep into the image and spy more distant galaxies of all shapes scattered throughout the image.
A jellyfish, blue tendrils trailing, speeds across this Hubble image of galaxy ESO 137-001. What shapes or stories do you see? Leave a note below.
Intense blue streaks trail ESO 137-001 in this composite image from NASA’s Hubble Space Telescope and the Chandra X-Ray Observatory. Wisps of gas stream from hot blue stars as the spiral galaxy ESO 137-001 blasts through the heart of galaxy cluster Abell 3627. Astronomers call this stripping of gas and dust from a galaxy ram pressure stripping. Ram pressure is the drag felt by an object as it moves through a thick fluid, such as your body walking through water. The fluid here though would not be suitable for swimming. It’s superheated gas that lurks near the heart of all galaxy clusters.
Surrounding this galaxy are countless nearby stars in our own Milky Way Galaxy. ESO 137-001 lies near the plane of our galaxy, its light blocked by thick dust and gas. Farther away in the image, look for galaxies of all shapes and pointing in different directions. Most of those galaxies are far beyond ESO 137-001 and are not part of the Abell 3627 galaxy cluster. ESO-137-001 lies about 200 million light-years from Earth. It is part of the Norma Cluster near the center of a region of space called the Great Attractor. This area’s mass is so strong that even The Local Group, containing our galaxy and the Andromeda Galaxy, feel the tug of this strong gravity source.
It took 35 years to make the leap, but a plucky little spacecraft has gone where none have gone before; beyond the bounds of the solar system and into the black between stars. Voyager 1 is our first starship; the first interstellar traveler. As such, the name Voyager should be “retired” from future use to honor the mission and humans who worked to make Voyager’s journey so remarkable.
On September 11, 2013, Voyager 1 officially sailed through the outer edges of our solar system on it Interstellar Mission. After exploring the outer planets, Voyager’s primary mission is to explore the edge of the heliosphere; a huge bubble of charged particles or plasma surrounding the Sun. It popped through that bubble sometime in the summer of 2012.
In 1977, Voyager 1 launched a couple months behind its sister, Voyager 2. It was an exciting era of space exploration. Scientists dreamed up a brilliant mission to take a Grand Tour and discover much about the outer solar system. Over the next few years, Voyager dazzled us with amazing close-up images and science of Jupiter and Saturn, then Uranus and Neptune.
19 Amazing Voyager Facts
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A wing, or fan, sweeps across a star in this image from the NASA/ESA Hubble Space Telescope.
Explore the swirls, loops and turbulence in this star cloud. What stories or shapes do you see? Leave a note in the comments below.
V* PV Cephei is the young star just at the edge of the bluish wing, known as GM 1-29 or Gyulbudaghian’s Nebula. As you pan across the fan, look for curls and bright patches within the nebula. While we see only a fan, the nebula itself probably surrounds the bright star. Just like a doorway lets in only a little light, dust surrounding PV Cep is blocking most of the starlight, leaving just a shaft of light to light up the dust cloud.
Astronomers like to study the wing-shaped nebula because it changes over the span of just a few months. The star also varies in brightness over a short period of time.
PV Cep is found about 1,600 light-years from Earth toward the constellation of Cepheus, the King.
A smoky horse rises from a pink cloud of hydrogen gas in this spectacular new image of the Horseahd Nebula from the NASA/ESA Hubble Space Telescope.
Zoom in and explore this dark pillar of dust. What shapes or stories do you see? Leave a note in the comments below.
The Horsehead Nebula is one of the most easily recognized nebula in the sky. Identified in 1888 by Williamina Fleming, its swirling shape resembles a horse’s head when viewed from Earth. Even in a telescope, the emission nebula is hard to see. Fleming identified the nebula using photographic plates taken at the Harvard College Observatory.
The vast interstellar cloud of dust is found just south of the star Alnitak, the most eastern star in Orion’s belt. The pillar of dust and gas, found about 1,500 light-years from Earth, collapsed from the even larger Orion Molecular Cloud Complex. The clumps of material reflect light from the nearby hot star Sigma Orionis.
Usually the Horsehead Nebula is shown as a dark pillar against a bright pink background. The pink nebula is being energized by young, hot stars deep in the nebula. Ultraviolet radiation streaming from these stars causes hydrogen gas in the the nebula to glow pink and red. For this image, Hubble shows this area in infrared light. Infrared is a longer wavelength of light than visible light. We feel infrared light as heat. By using this kind of light, Hubble can pierce the dusty outer layers of the nebula and see deeper, revealing ghostly swirls and delicate folds of gas.
The image also reveals hundreds of faraway galaxies glowing with their own warm light. Pan around to find these stunning gems.
Scientists released this new image of the Horsehead Nebula to celebrate Hubble’s 23rd year in orbit.