halo

halo

A roughly spherical collection of old stars, clusters of old stars (called globular clusters), and a little bit of gas and dust that extends farther than all other components of a galaxy. Halos contain dark matter, which is material that we cannot see but whose gravitational force can be measured. In the Milky Way, the halo measures about 130,000 light-years across.

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ส่วนหนึ่งของคำพูด: noun
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อุตสาหกรรม/ขอบเขต: Physics
Category: Astronomy
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galaktički halo

Physics; Particle physics

the region of dark matter that surrounds the visible portion of a galaxy

halo efekat

Education; Teaching

The tendency to judge an person based on a previous formed favorable or unfavorable impression.

nepravilna galaksija

Physics; Astronomy

A galaxy whose shape is neither elliptical nor spiral. It is often rich in interstellar matter (gas and dust).

svetlosna godina

Physics; Astronomy

The distance traveled by light in a full year, equal to some 10 trillion kilometers (or about 6 trillion miles).

crvene zvezde

Physics; Astronomy

Stars with low temperatures. Hydrogen-burning red stars are small and use their available fuel slowly. These low-mass stars last for tens to hundreds of billions of years — much ...

spiralna galaksija

Physics; Astronomy

A galaxy made up of a disk, spiral arms, and a bulge at its center. The size of the disk and the bulge vary. The galaxy is composed of a mixture of old and young stars, as well as ...

venov dijagram

Physics; Astronomy

A diagram consisting of two or more overlapping circles. It is often used in mathematics to show relationships between sets. In other applications, Venn diagrams are useful for ...

žuta zvezda

Physics; Astronomy

Stars that live for a medium length of time (about 10 billion years) and are neither extremely cool nor hot. Earth’s Sun is an example of a yellow star.