When was the last time all of the planets were aligned? (Beginner) - Curious About Astronomy? Ask an Astronomer
One calculation of alignments within around thirty degrees (about as close as they can get) shows that the last such alignment was in 561 BC, and the next will be in 2854. He got his PhD from Cornell in 2001 and is now an assistant professor in the Department of Physics and Physical Science at Humboldt State University in California
A spacecraft placed there is more distant from the Sun and therefore should orbit it more slowly than Earth; but the extra pull of our planet adds to that of the Sun's, and allows the spacecraft to move faster, keeping pace with Earth. This is L1, and is a good position from which to monitor the Sun since the constant stream of particles from the Sun, the solar wind, reaches L1 about an hour before reaching Earth
The moon may have once been a part of the Earth; it may have been broken off the Earth during a catastrophic collision of a huge body with the Earth billions of years ago. The atmosphere was formed by planetary degassing, a process in which gases like carbon dioxide, water vapor, sulphur dioxide and nitrogen were released from the interior of the Earth from volcanoes and other processes
The Energy Story - Chapter 2: What Is Electricity?
The Latin word, electricus, means to "produce from amber by friction." So, we get our English word electricity from Greek and Latin words that were about amber. But what is electricity? Where does it come from? How does it work? Before we understand all that, we need to know a little bit about atoms and their structure
Planets For Kids - Solar System Facts and Astronomy
A lot of astronomy people like to think of the Solar System been made up in two partsWe have the Inner Solar System which has Mercury, Venus, Earth and not forgetting Mars. While the planets try to fly away in the end they are kind of in the middle floating around the sun.They are 140 moons that orbit the eight planets in the solar system
What is the Average Surface Temperature of the Planets in our Solar System?
Link frankm December 16, 2014, 1:43 PM Not to put too fine a point on things but In January 2012 a 13-member committee of the WMO came to the conclusion that due to questions about instrument shelter location and other inconsistent record keeping, etc, that the El-Azizia record, in fact, was invalid. In short, the Solar System runs the gambit from extreme cold to extreme hot, with plenty of variance and only a few places that are temperate enough to sustain life
What is the Distance from Earth to Mars?
When Earth and Mars are at their theoretically closest point of 54.6 million km, it would take a signal from Earth about 3 minutes to make the journey, and then another 3 minutes for the signals to get back to Earth. Furthermore, you want a situation where Earth is at aphelion, at its most distant point from the Sun, and Mars is at perihelion, the closest point to the Sun
JPL Solar System Dynamics
Orbits Orbit diagrams for most solar system bodies as well as tables of orbital elements for the planets, planetary satellites, asteroids and comets are available
What climate change is happening to other planets in the solar system
Red XIV at 17:08 PM on 6 July, 2010 On the simplest level, if Pluto were being warmed significantly by increase in solar output despite how very far away it is, a much closer planet like Earth would be fried by that increased output. Home Arguments Software Resources Comments The Consensus Project Translations About Donate Climate's changed before It's the sun It's not bad There is no consensus It's cooling Models are unreliable Temp record is unreliable Animals and plants can adapt It hasn't warmed since 1998 Antarctica is gaining ice View All Arguments..
Similar in structure and size to Earth, Venus' thick, toxic atmosphere traps heat in a runaway 'greenhouse effect.' The scorched world has temperatures hot enough to melt lead. Like Earth, Mars has seasons, polar ice caps, volcanoes, canyons and weather, but its atmosphere is too thin for liquid water to exist for long on the surface
Astronomers have actually detected several other quasi-orbital satellites that belong to the Earth, all here for a little while before caroming on to pastures new. This is why it was so crucial that Philae was able to use its harpoons to tether itself to the surface, and why their failure meant that the lander bounced so far away from its landing site
The Planets The nine planets that orbit the sun are (in order from the Sun): Mercury, Venus, Earth, Mars, Jupiter (the biggest planet in our Solar System), Saturn (with large, orbiting rings), Uranus, Neptune, and Pluto (a dwarf planet or plutoid)
The Incredible Design of the Earth and Our Solar System
In fact, nearly all large planets have been found to be closer to their stars than the earth is to the Sun (which would remove all rocky planets in the habitable zone from those systems). If most of the crust of the earth had not been blown away during the formation of the moon, the earth would have no continents, but would be completely covered by water (see The Moon And Plate Tectonics: Why We Are Alone from spacedaily.com)
What Is A Solar Eclipse? - MonkeySee
Solar eclipses only occur during new moons, when the moon's surface is in shadow.During an eclipse, the temperature may drop due to the loss of sunlight. In this What is? video, we're going to take a closer look at solar eclipses.A solar eclipse occurs when the new moon passes between the Earth and the Sun
Planet Order from the Sun; Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune Our knowledge of our solar system is extensive but it is far from complete. Please visit our Astronomy news section which gives news, notes and general observations, we also have an interactive tour of the solar system (loads in a new window) All planets can be seen with a small telescope or binoculars and private observatories continue to provide useful information
BBC Solar System - Earth orbits in the Goldilocks zone
Earth's human population is divided among about two hundred sovereign states which interact through diplomacy, conflict, travel, trade and communication media. Within its first billion years,life appeared in its oceans and began to affect its atmosphere and surface, promoting the proliferation of aerobic as well as anaerobic organisms and causing the formation of the atmosphere's ozone layer
Earth's other 'moon' and its crazy orbit could reveal mysteries of the solar system
Astronomers have actually detected several other quasi-orbital satellites that belong to the Earth, all here for a little while before caroming on to pastures new. Next time why you don't ask him why he calls everybody that instead of just flinging it out for everybody to answer? He probably knows why better than everybody else does
An Overview of the Solar System, it's alignment and pictures
The eight bodies officially categorized as planets are often further classified in several ways: by composition: terrestrial or rocky planets: Mercury, Venus, Earth, and Mars: The terrestrial planets are composed primarily of rock and metal and have relatively high densities, slow rotation, solid surfaces, no rings and few satellites. With a few exceptions, the planetary satellites orbit in the same sense as the planets and approximately in the plane of the ecliptic but this is not generally true for comets and asteroids
SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
This logistically complicated experiment is a pathfinder: It is teaching us how to build a whole network of launch sites to monitor Earth's atmosphere on continental scales. Automated software maintained by NASA's Meteoroid Environment Office calculates their orbits, velocity, penetration depth in Earth's atmosphere and many other characteristics
How Big is the Solar System?
It should be a unit that will make a good story afterwards like "All the way from the flagpole to the Japanese garden!" Put the Sun ball down, and march away as follows. Leaving aside the entirely distinct natures of the bodies and the orbits, there is a difference in relative sizes: the spaces within the atom are even larger a hundred times larger-than the spaces within the solar system! The distance from the Sun out to Mercury is about 45 Sun-widths
What is the speed of the fastest moving body in our solar system? - Physics Stack Exchange
Alas, it's also the last speed it'll have before it meets its doom :-) Update If you want to know the fastest object in the solar system that didn't crash into the Sun, then the best candidates are sungrazing comets, i.e. As the person asking seems keen to get a larger variety of responses, I am going to give this question another twist by enquiring about the maximum speed relative to Earth: Earth is a planet, which means it cleans its orbit around Sun from material objects
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