A study of comet motions indicates that the solar system has a second alignment plane. Analytical investigation of the orbits of long-period comets shows that the aphelia of the comets, the point where they are farthest from ...
Astronomy
Sep 29, 2020
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A solar-powered airplane on a mission to fly around the world landed in California, completing a risky, three-day flight across a great expanse of the Pacific Ocean.
Energy & Green Tech
Apr 24, 2016
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A solar-powered airplane on an around-the-world journey had traveled 80 percent of the way from Hawaii to California by Saturday morning.
Energy & Green Tech
Apr 23, 2016
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896
The Swiss sun-powered aircraft Solar Impulse landed safely in Madrid early Friday at the end of the first leg of its attempt at an intercontinental flight without using a drop of fuel.
Energy & Green Tech
May 25, 2012
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The sun-powered plane Solar Impulse 2 has made a successful test flight in Hawaii, where it has been grounded for repairs on its round-the-world trek, the Swiss-based project said Saturday.
Energy & Green Tech
Feb 28, 2016
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626
The final leg of an unprecedented world tour by a solar-powered plane was postponed Saturday due to the pilot's health, he said in a message on Twitter.
Energy & Green Tech
Jul 17, 2016
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The Swiss sun-powered aircraft Solar Impulse will attempt to fly from Switzerland to Morocco in coming weeks, in its longest flight to date, organisers said Wednesday.
Energy & Green Tech
Mar 28, 2012
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0
(PhysOrg.com) -- A huge airplane using solar cells as its only power source is being tested in Switzerland. In its first successful test flight last December, the plane flew only 350 meters at a height of just one meter above ...
The first solar plane aimed at reaching the stratosphere made an initial low-altitude test flight over Switzerland Friday.
Energy & Green Tech
May 5, 2017
8
234
A solar plane on an around-the-world journey has reached the point of no return over the Pacific Ocean after departing Hawaii, and now it's California or bust.
Energy & Green Tech
Apr 22, 2016
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