Dark matter is an invisible and mysterious substance that is thought to be crucial to the formation of galaxies.
And, yet, scientists using telescopes atop Maunakea found one galaxy that has almost none at all. The discovery challenges the way scientists think about how galaxies are born.
“For decades, we thought that galaxies start their lives as blobs of dark matter,” said astronomer Pieter van Dokkum of Yale University in a press release issued by W.M. Keck Observatory. “After that, everything else happens: Gas falls into the dark matter halos, the gas turns into stars, they slowly build up, then you end up with galaxies like the Milky Way.”
Measurements made with Keck and Gemini Observatory, both on Maunakea, the Hubble Space Telescope and others showed that NGC 1052-DF2, an ultra-diffuse galaxy, followed a different path.
With spectral data from Keck, van Dokkum’s team found clusters of stars were moving much slower than expected, which indicates less mass in a system. The team determined almost all of the galaxy’s mass could be attributed to stars, which means there is almost no dark matter, the release said.
Gemini then assisted by showing the galaxy was not interacting with other galaxies.
According to the release, the results show that dark matter is separable from galaxies.
“It’s like you take a galaxy and you only have the stellar halo and globular clusters, and it somehow forgot to make everything else,” van Dokkum said. “There is no theory that predicted these types of galaxies. The galaxy is a complete mystery, as everything about it is strange. How you actually go about forming one of these things is completely unknown.”
Potential explanations, which remain speculative, are that a fledgling massive galaxy billions of years ago played a role, or that a cataclysmic event within the galaxy swept out gas and dark matter, halting star formation, the release said.
Van Dokkum plans to use Keck to search for more galaxies like NGC 1052-DF2.
“Every galaxy we know about before has dark matter, and they all fall in familiar categories like spiral or elliptical galaxies,” he said. “But what would you get if there were no dark matter at all? Maybe this is what you would get.”
Email Tom Callis at tcallis@hawaiitribune-herald.com.
Science???
No way baby!!
“God” did it!
Genesis 1:14-19 English Standard Version (ESV)
14 And God said, “Let there be lights in the expanse of the heavens to separate the day from the night. And let them be for signs and for seasons,[a] and for days and years, 15 and let them be lights in the expanse of the heavens to give light upon the earth.” And it was so. 16 And God made the two great lights—the greater light to rule the day and the lesser light to rule the night—and the stars. 17 And God set them in the expanse of the heavens to give light on the earth, 18 to rule over the day and over the night, and to separate the light from the darkness. And God saw that it was good. 19 And there was evening and there was morning, the fourth day.
Well, I see you quoted the bible.
I am more than willing to debate your posted verses with you, but please understand that I will require you to debate these verses as well:
However, you may purchase male or female slaves from among the foreigners who live among you. You may also purchase the children of such resident foreigners, including those who have been born in your land. You may treat them as your property, passing them on to your children as a permanent inheritance. You may treat your slaves like this, but the people of Israel, your relatives, must never be treated
this way. (Leviticus 25:44-46 NLT)
If you buy a Hebrew slave, he is to serve for only six years. Set him free in the seventh year, and he will owe you nothing for his freedom. If he was single when he became your slave and then married afterward, only he will go free in the seventh year. But if he was married before he became a slave, then his wife will be freed with him. If his master gave him a wife while he was a slave, and they had sons
or daughters, then the man will be free in the seventh year, but his wife and children will still belong to his master. But the slave may plainly declare, ‘I love my master, my wife, and my children. I would rather not go free.’ If he does this, his master must present him before God. Then his master must take him to the door and publicly pierce his ear with an awl. After that, the slave will belong to his master forever. (Exodus 21:2-6 NLT)
So, are your verses based in reality or are mine or are both or are they just crazy talk?
There is an old saying that I think is fitting here:
“If you want to combine the dual pleasures of insanity and social acceptance, religion is your only choice”