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Doctors recommend sleeping on an incline, which allows gravity to keep the stomach's contents where they belong.
This is: why do galaxies, which seem to rotate too fast for their own gravity to keep them in one piece, not fly apart?
Vesta's size (it is around 520km in diameter) and density make it massive enough for its gravity to keep it roughly spherical, like a proper planet.
The handSteady cup looks like a normal cup, it's made of fine bone china and uses gravity to keep the liquid in place.
Scientists have known since the 1930s that there was a problem: that the mass of the observed matter was far too small for gravity to keep the stars within the galaxies and the galaxies within clusters.
Sheet masks (reliant on gravity to keep them in place) force you to lie down and do nothing while the product works, making them an ideal hangover treatment under which to whine and moan.
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The higher gravity tends to keep material ejected from a crater from traveling as far only 65 percent of the distance that would be reached on the Moon.
So they assume that some form of dark matter pervades each galaxy and provides the extra gravity needed to keep it whole.
For decades, astronomers' observations have indicated that some elusive "dark matter" provides most of the gravity needed to keep the stars from flying out of the galaxies.
Here's one reason libraries hang on to old science journals: A paper from an experiment conducted 32 years ago may shed light on the nature of dark matter, the mysterious stuff whose gravity appears to keep the galaxies from flying apart.
About 22% of the universe consists of mysterious dark matter--weighty stuff whose gravity appears to keep the stars from flying out of galaxies and to hold clusters of galaxies together but that has never been directly observed.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com