Astronomy

The axis of the Earth's rotation is tilted at an angle of 23.44 degrees to the plane of the eclliptic, which is the plane of the...

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You look East to see the Moon rise.

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It's only infinite around the event horizon.

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Black holes do exist. They are giant singularities (infinitely small compressed matter) that such pretty much everything in. They...

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Approximately half. Because the Moon is orbiting the Earth, various fractions of this illuminated surface are visible, depending...

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Polaris is at a distance of about 430 light-years.

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The Earth does not move around the Sun at constant distance and speed. It would if it followed a circular orbit, but instead the...

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Atoms of many gases exist in space, but they are not concentrated enough to provide a breathable atmosphere (air).

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A revolution. That is how we measure years.

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The only planet that "emits" light is the Earth, from all of the artificial lamps here. Green lights would be the color of...

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AnswerAccording to Scientific American: "The North Star, or Polaris, is the brightest star in the constellation Ursa Minor, the...

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The galactic year, also known as a cosmic year, is the duration of time required for the solar system to orbit once around the...

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Pictures of the Earth from outer space are one example of evidence.

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We all know that the color of anything depends on the wavelength of the light coming from it? For example, if the wavelength is...

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Constantly. They're all moving in slightly different directions at significant speeds. Note that the sun circles the galaxy...

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It depends on the mass. Big ones may take longer.

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Oh that's just a theory. Evidence that supports the theory is the fact that up until now, it's the simplest explanation we know...

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Most often? Little to none. Some stars in a constellation may be gravitationally related to each other, but usually, the...

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The name for a natural satellite of a planet is called "a moon".

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When the sun is blocked of from the earth by the moon. Only people that are directly under the moon can see it perfectly.

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Nebula -> Protostar -> intermediate mass start -> red giant -> planetary nebula -> white dwarf -> black dwarf

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The black holes that power quasars are still there. They are simply not as active as when they were young; pressumably because...

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They offer extreme magnifications of the Skies overhead, and thereby provide extreme close up views of real objects millions and...

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They are Voyageur 1 & 2 After they did their missions, they went out of our Solar system to Search for Aliens!

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The "zero" or reference for right ascension in the sky is the meridian that joins the north and south poles of the sky and...

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A "ring around the Moon" indicate that there is a layer of microscopic ice crystals high in the atmosphere. A website on Moon...

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"A satellite is an object that goes around, or orbits, a larger object, such as a planet. While there are natural satellites,...

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All visible stars are within the the Milky Way Galaxy. Antares is no exception.

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It doesn't make much sense if you apply it to a Newtonian point of view, but in an Einstein point of view, with the theory of...

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The moon doesn't always rise at night. It rises and sets once in every period of about 24hours 50minutes. In the course of 29.5...

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The only city named Regina that I found was Regina, Saskatchewan, Canada, and a quick look at Google Maps shows a number of...

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It's the distance light travels in the vacuum of space over an entire year. Light travels about 186,000 miles per second. You can...

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The brightest star in the Ursa Minor, it's at the end of the Little Dipper's handle.

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Meteor - These fall into the Earth's atmosphere but burn up or vaporise before they touch the ground. Meteorite - These survive...

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The visible light around the rough Moon surface during a solar eclipse is caled Baily's Beads.

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Nobody "discovered" that the Sun was at the centre of the Solar system. Aristarchus of Samos, a greek philosopher and astronomer...

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There are five lines of latitude that represent more than a little ink on the paper. All the rest are simply used to draw a...

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Increasing the distance between the two most widely separated radio telescopes has an enormous effect on resolution.

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Hydrogen. More accurately, hydrogen-1 is converted into helium-4.

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No, that is false.

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By daylight, the winter solstice.

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The Chandra Telescope uses x-rays to examine outer space.

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From another source as God is narrowly defined. Depends on your point of veiw. ______________________________ Scientists do...

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It is impossible to walk on the Sun as it has no surface to walk on. Apart from that "small" detail, you would be incinerated...

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rotation . . . 27.32 daysrevolution around the earth . . . 27.32 daysrevolution around the sun . . . 365.256 days

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There are black holes in space, probably the most famous is the one in the constellation of Cygnus (the swan) and is called...

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There are black holes in space, probably the most famous is the one in the constellation of Cygnus (the swan) and is called...

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No. During a lunar eclipse, you can safely stare directly at the moon continuously, for the entire several hours that the eclipse...

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A solar system with two suns is referred to as a binary star system. Likewise, a system with three suns (very rare, as far as we...

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Relative to an earthbound observer, the moon's periods of rotation and revolution are the same ... 27.32 days. (rounded)

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Whoever looked into the sky first. "Shooting Stars" are just pieces of rock that enter our atmosphere and burn up producing light...

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22.09 austronaumical units (1,784,860,000 miles)

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The moon appears crescent shaped during roughly the week following a New Moon, and also during roughly the week preceding a New...

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1No.. the planets orbit around the sun. the sun just stays ther. the sun doesn't move. and other suns are many light years away. ...

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AnswerOBAFGKMN represents the spectral types of stars in order as seen on the Hertzsprung Russell Diagram.A common mnemonic...

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The moon orbits the earth in a little under 28 earth days. It travels at almost 2,290 miles per hour. Coincidentally, the moon's...

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The changing distance of Earth from the Sun has little effect on what we refer to as seasons. It is instead the tilt of the...

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Only rarely, but it has happened.

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Perseus is a constellation ... a collection of individual stars that appear to form a pattern in the sky because of their...

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Rigel is visible along with Orion. It can be seen in the mornings from August till October and in the evenings from November till...

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Not "life as we know it", such as life here on Earth. We can't speak with any precision about "life as we DON'T know it", other...

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The temperature in space is close to "absolute zero" because any object there will radiate heat until it cools to that point....

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It takes about 1,000,000 [1] years, on average. for a photon to travel from the Suns core to the surface. Neutrons make the same...

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A corona comes during a solar eclipse. A solar eclipse starts in the day. To form, Earth moves behind the Moon, leaving sunlight...

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That means, the Universe in its early stages of development.

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Many stars produce close to or near a full continuous spectra. However, many of the stars observed on Earth, are at a large...

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To erradicate superstitions in general, an effort is required to educate people. This can be organized at the government level,...

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Basically, like everyone else, astronomers hate large numbers. Why say 93,000,000 miles or 9.3 x 107 or to keep the Europeans...

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the atmosphere of the sun is called the corona the corona is many times hotter the surface of the sun. Astronomers can see the...

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There is a longstanding myth that the Great Wall of China is the only manmade object visible from space. It and several...

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A sunspot is an area on the Sun's surface (the photosphere) that is affected by intense magnetic activity, which inhibits...

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The asteroid belt is an area between the orbits of Jupiter and Mars that contains many small, rocky bodies. Jupiter does have...

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It is not. In fact, the Sun's brightness is fairly constant, changing by only a fraction of one percent. In the winter, when the...

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Oh, you are in for a couple of mind-boggling insights! The basic insight to get is the idea of apparent motion and how it is...

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Solar System is our Sun and the eight planets (Plus all the other stuff that revolves around our Sun). The Universe is...

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Polaris has a luminosity of 2,200 solar luminosities.

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The two main gasses in the Sun are Hydrogen and Helium.

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(1) There are many theories, and as you can imagine, they are not easily tested. The above answer is generally the inevitable...

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The answer is not a simple one, because it depends on the criteria used. As you move upward from the surface, gravity and the...

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The largest known star is VY Canis Majoris [See Link] which is about 2,100 times larger than our Sun which would mean...

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This occurs because, relative to the Sun, the Earth's orbit is aligned with the solar equator. But the axis of Earth's rotation...

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Visit this link: [See Related Links]

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A barred spiral galaxy (SBc classification). It is like a spiral galaxy but has a bar structure near the centre.

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A galaxy is essentially a large cluster of stars, ranging in size from several thousand stars, to several trillion. A quasar is...

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Nitrogen occurs as a diatomic gas in the atmosphere. It is usually not that reactive because two nitrogen atoms are bonded...

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As you didn't specify a unit of measurement, I'm going for Km. The Moon has an equatorial diameter of 3,476.28 km - so close...

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There is surprisingly little in common between the orbit of an electron and the orbit of a planet. It is magnetism that holds an...

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A solar eclipse doesn't occur at the time of every New Moon. But when one does occur, it can only be at the time of a New Moon.

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First orbiting object was the Soviet satellite Sputnik launched in 1957. If "to be in space" doesn't mean to orbit (which can be...

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"The middle of nothing" actually doesn't make any sense. By saying "middle" you are implying spatial dimensions. Space is...

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You can find the international spation station and space shuttles in the exosphere.

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The Earth travels 30 kilometres in one second

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Around the time of ancient Greek. From my understanding, There was believed to be a Greek goddess that breast fed her baby. The...

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The Earth makes one rotation in 24 hours (well, not EXACTLY but close enough for argument). So take the circumference in miles...

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The very quick and dirty answer: Our moon plays a major role in the tides of the earth's oceans because the earth and moon are...

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It takes 2,393 years to do one orbit. It is the longest visible comet when it does come it can be seen for over 19 months. It...

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The first country to send a manned craft to orbit Earth and recover both the craft and astronaut was the USSR.

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