Mysterious dark matter makes up 85 percent of matter in the universe, and of the remaining 15 percent, scientists couldn’t ...

Scientists may have finally found the universe’s missing matter - hidden in invisible hydrogen gas far beyond galaxies.

"All the odd shapes and swirling gas observed in the Perseus cluster now make sense within the context of a major merger." ...

Astronomers may have found the long-missing half of the universe's regular matter—and it appears to have been right under our ...

Astronomers have long struggled with a troubling puzzle: a significant portion of normal matter in the universe appeared to ...

For decades, scientists have known that ordinary matter — everything made of atoms — accounts for just 15% of the universe’s ...

A blob of gas seen outside the Milky Way could be a type of starless, dark matter–dominated galaxy. Some scientists are skeptical.

A team of astronomers and astrophysicists at the Chinese Academy of Science's National Astronomical Observatories has found evidence suggesting that a "gas clump" in a fast-moving cloud in the ...

Substances can exist in three states of matter - solid, liquid and gas. All substances are made from particles, and the forces between the particles are different in solids, liquids and gases.

The expansion by heat in different lorms of matter, is exceedingly various. By being heated from 32 to 212 , 1000 cubic inches of iron become 1004 1000 " water " 1045 1000 " air " 1366 Gases are ...

In normal everyday life we come across matter in three states, solid, liquid and gas. They have a fixed shape and cannot flow The particles cannot move from place to place They cannot be ...

Students are introduced to the idea that matter is composed of atoms and molecules that are ... experiment with and observe the heating and cooling of a solid, liquid, and gas.