Interesting
Hubble (@NASAHubble) profile pictureHubble
@NASAHubbleNov 2
Where's the oxygen? After researchers studied nearby dwarf galaxies, they realized much of the oxygen they expected to see was missing. Galactic winds from supernova explosions are apparently more effective at removing oxygen than current models predict: go.nasa.gov/3U6N5Sc
Clumpy, irregular, cloud-like dwarf galaxy in a roughly rectangular shape is speckled with small, bright, blue points of light and larger, light pink patches throughout. Dark brown and milky white areas are also smudged throughout the center of the galaxy. The galaxy appears against a mostly black background lightly dotted with tiny white, blue, and red stars, and galaxies.

ALT Clumpy, irregular, cloud-like dwarf galaxy in a roughly rectangular shape is speckled with small, bright, blue points of light and larger, light pink patches throughout. Dark brown and milky white areas are also smudged throughout the center of the galaxy. The galaxy appears against a mostly black background lightly dotted with tiny white, blue, and red stars, and galaxies.

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ハッブルが観測した矮小銀河「NGC 4449」など、近傍の37銀河で予想以上に酸素が失われていることが判明。超新星爆発によって生じる「銀河風」が、従来の予測以上に効率よく酸素を銀河の外へ運び出している可能性が示されています。銀河の化学進化を解明するうえで、興味深い成果ですね。。🔭
Image from picard (@picard_224)
Hubble (@NASAHubble) profile pictureHubble
@NASAHubbleNov 2
Where's the oxygen? After researchers studied nearby dwarf galaxies, they realized much of the oxygen they expected to see was missing. Galactic winds from supernova explosions are apparently more effective at removing oxygen than current models predict: go.nasa.gov/3U6N5Sc
Clumpy, irregular, cloud-like dwarf galaxy in a roughly rectangular shape is speckled with small, bright, blue points of light and larger, light pink patches throughout. Dark brown and milky white areas are also smudged throughout the center of the galaxy. The galaxy appears against a mostly black background lightly dotted with tiny white, blue, and red stars, and galaxies.

ALT Clumpy, irregular, cloud-like dwarf galaxy in a roughly rectangular shape is speckled with small, bright, blue points of light and larger, light pink patches throughout. Dark brown and milky white areas are also smudged throughout the center of the galaxy. The galaxy appears against a mostly black background lightly dotted with tiny white, blue, and red stars, and galaxies.

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I ask the same question every time I ride the 6 train uptown.
Hubble (@NASAHubble) profile pictureHubble
@NASAHubbleNov 2
Where's the oxygen? After researchers studied nearby dwarf galaxies, they realized much of the oxygen they expected to see was missing. Galactic winds from supernova explosions are apparently more effective at removing oxygen than current models predict: go.nasa.gov/3U6N5Sc
Clumpy, irregular, cloud-like dwarf galaxy in a roughly rectangular shape is speckled with small, bright, blue points of light and larger, light pink patches throughout. Dark brown and milky white areas are also smudged throughout the center of the galaxy. The galaxy appears against a mostly black background lightly dotted with tiny white, blue, and red stars, and galaxies.

ALT Clumpy, irregular, cloud-like dwarf galaxy in a roughly rectangular shape is speckled with small, bright, blue points of light and larger, light pink patches throughout. Dark brown and milky white areas are also smudged throughout the center of the galaxy. The galaxy appears against a mostly black background lightly dotted with tiny white, blue, and red stars, and galaxies.

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