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A solar flare is a sudden flash of brightness observed over the Sun's surface or the solar limb, which is interpreted as an energy release of up to 6 × 10 25 joules (about a sixth of the total Sun's energy output each second or 160 billion megatons of TNT equivalent, over 25,000 times more energy than released from the impact of Comet ...
A shock wave from a supernova may have triggered the formation of the Sun by creating relatively dense regions within the cloud, causing these regions to collapse. [ 16 ] [ 17 ] The highly homogeneous distribution of iron-60 in the Solar System points to the occurrence of this supernova and its injection of iron-60 being well before the ...
They observed a 100,000-km-high wave of hot plasma and magnetism, moving at 250 km/s, in conjunction with a big coronal mass ejection in February 2009. [6] [7] Moreton measured the waves propagating at a speed of 500–1500 km/s. [6] Yutaka Uchida interpreted Moreton waves as MHD fast mode shock waves propagating in the corona. [8]
After the sun celebrates its 11 billionth birthday, scientists believe it will continue to expand to the point where it is 166 times bigger than it is now.
When our sun dies about 5 billion years from now it might look something like this glowing celestial display which was captured from 4,600 light-years away. Hubble image of a star exploding may ...
'harbour wave', [5] pronounced) is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake. Earthquakes , volcanic eruptions and underwater explosions (including detonations, landslides , glacier calvings , meteorite impacts and other disturbances) above or below water all ...
Astronomers first reported unusual flares on 2 August, later corroborated by orbiting spacecraft. On 3 August, Pioneer 9 detected a shock wave and sudden increase in solar wind speed [33] from approximately 217–363 mi/s (349–584 km/s). [34] A shockwave passed Pioneer 10, which was 2.2 AU from the Sun at the time. [4]
The leading shock wave associated with the CME was travelling radially at a speed of around 3,300 km/s (2,100 mi/s) relative to STEREO-A by the time it reached the spacecraft. The CME travelled from the Sun to Earth's orbit in about 20.78 hours, indicating an average speed of 2,000 km/s (1,200 mi/s).