Quotes About Sun

heliocentric orbits, come too close to the sun's heat

In 5-billion years the Sun will expand & engulf our orbit as the charred ember that was once Earth vaporizes. Have a nice day.

Perhaps these ancient observatories perennially impress modern people because modern people have no idea how the Sun, Moon, or stars move. We are too busy watching evening television to care what's going on in the sky. To us, a simple rock alignment based on cosmic patterns looks like an Einsteinian feat. But a truly mysterious civilization would be one that made no cultural or architectural reference to the sky at all.

The easy part is the ray's 500-second speed-of-light jaunt from the Sun to Earth, through the void of interplanetary space. The hard part is the light's million-year adventure to get from the Sun's center to its surface.

To picture a pulsar, imagine the mass of the Sun packed into a ball the size of Manhattan. If that's hard to do, then maybe it's easier if you imagine stuffing about a billion elephants into a Chapstick casing.

Science literacy is being plugged into the forces that power the universe. There is no excuse for thinking that the Sun, which is a million times the size of Earth, orbits Earth.

cool stars are red. Tepid stars are white. Hot stars are blue. Very hot stars are still blue. How about the very, very hot places, like the 15-million-degree center of the Sun? Blue. To an astrophysicist, red-hot foods and red-hot lovers both leave room for improvement.

night and day, a hundred billion neutrinos from the Sun pass through each square inch of your body, every second, without a trace of interaction with your body's atoms.

The one we call Earth formed in a kind of Goldilocks zone around the Sun, where oceans remain largely in liquid form.

Earth's Moon is about 1/400th the diameter of the Sun, but it is also 1/400th as far from us, making the Sun and the Moon the same size on the sky—a coincidence not shared by any other planet–moon combination in the solar system, allowing for uniquely photogenic total solar eclipses.

adding travel time lost during the pit stop between photon absorption and re-emission, the total trip lasts about a million years. If a photon had a clear path from the Sun's center to its surface, its journey would instead last all of 2.3 seconds.

Had Earth been much closer to the Sun, the oceans would have evaporated. Had Earth been much farther away, the oceans would have frozen.

Had Earth been much closer to the Sun, the oceans would have evaporated. Had Earth been much farther away, the oceans would have frozen. In either case, life as we know it would not have evolved.

These same oxygen atoms, normally found in pairs (O2), also combined in threes to form ozone (O3) in the upper atmosphere, which serves as a shield that protects Earth's surface from most of the Sun's molecule-hostile ultraviolet photons.

The exact orbit of Earth is controlled by the Sun's mass and the mass of all remaining planets. An object's mass and its distance is all we need to know to completely determine the effects of its gravity on Earth.

Earth's brightness is less than one-billionth that of the Sun, and our planet's proximity to the Sun would make it extremely hard for anybody to see Earth directly with a visible light telescope.

After nine billion years of such enrichment, in an undistinguished part of the universe (the outskirts of the Virgo Supercluster) in an undistinguished galaxy (the Milky Way) in an undistinguished region (the Orion Arm), an undistinguished star (the Sun) was born.

In our own solar system, for example, everything that is not the Sun adds up to less than one fifth of one percent of the Sun's mass.

Earth's Moon is about 1/400th the diameter of the Sun, but it is also 1/400th as far from us, making the Sun and the Moon the same size in the sky—a coincidence not shared by any other planet–moon combination in the solar system

Further analysis of the Sun's spectrum revealed the signature of an element that had no known counterpart on Earth. Being of the Sun, the new substance was given a name derived from the Greek word helios ("the Sun"), and was only later discovered in the lab. Thus, helium became the first and only element in the chemist's Periodic Table to be discovered someplace other than Earth.

But high-mass stars fortuitously explode, scattering their chemically enriched guts throughout the galaxy. After nine billion years of such enrichment, in an undistinguished part of the universe (the outskirts of the Virgo Supercluster) in an undistinguished galaxy (the Milky Way) in an undistinguished region (the Orion Arm), an undistinguished star (the Sun) was born.

Earth's Moon is about 1/400th the diameter of the Sun, but it is also 1/400th as far from us, making the Sun and the Moon the same size on the sky—a coincidence not shared by any other planet–moon combination in the solar system, allowing for uniquely photogenic total solar eclipses. Earth

Earth's Moon is about 1/400th the diameter of the Sun, but it is also 1/400th as far from us, making the Sun and the Moon the same size in the sky—a coincidence not shared by any other planet–moon combination in the solar system, allowing for uniquely photogenic total solar eclipses.

The Sun heats the ground, and the ground heats the air. Visible light hits Earth and heats it. Earth reradiates that same energy as infrared, and it's the infrared that gets trapped by the greenhouse gases.