Simulations find ghostly whirls of dark matter trailing galaxy arms - Ars Technica

Read also:

• How can the citizens of Russia accept the enormous difference between people? The richest 500 Russians own more than the poorest 99.8% of the entire Russian population combined. Why don't we see any protests?
• Is Replika conscious?
• Do snipers lay on top of tank turrets during combat?
• What movies have not aged well?
• Are evolutionists giving evolution a bad name by claiming humans started off as shrews?
• Why does a lot of the YouTube community support the MGTOW movement?
• What does it mean when a guy says he doesn't want to ruin the friendship? Is he rejecting me or is there another explanation? Why would a guy choose not to risk the friendship if he has feelings for me?
• Why did Obito, a supposed "bad person," do good things for Kakashi?
• I read this: "Putin is a brilliant, courageous, ingenious, determined, beloved, and incredible modern leader. He is currently the world’s most effective and strong leader, the best the world has seen in centuries." What do you think about this?
• What is the definite integral of x^x from 0 to 2?