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Virgin Galactic officials specifically cite the overview effect as a motivation for carrying people to the edge of space, to fundamentally change the way people think about their home world. [30] Critics note, however, that the space travel needed to personally experience the full overview effect, itself involves significant environmental ...
Human presence in outer space began with the first launches of artificial object in the mid 20th century, and has increased to the point where Earth is orbited by a vast number of artificial objects and the far reaches of the Solar System have been visited and explored by a range of space probes.
Climate change can also be used more broadly to include changes to the climate that have happened throughout Earth's history. [32] Global warming—used as early as 1975 [33] —became the more popular term after NASA climate scientist James Hansen used it in his 1988 testimony in the U.S. Senate. [34] Since the 2000s, climate change has ...
Climate change is driving extreme weather By all accounts, the last few years have been brutal for the climate — and for the humans and other living things within it. Around the globe, heat ...
In astronomy, seeing is the degradation of the image of an astronomical object due to turbulence in the atmosphere of Earth that may become visible as blurring, twinkling or variable distortion. The origin of this effect is rapidly changing variations of the optical refractive index along the light path
The greenhouse effect on Earth is defined as: "The infrared radiative effect of all infrared absorbing constituents in the atmosphere.Greenhouse gases (GHGs), clouds, and some aerosols absorb terrestrial radiation emitted by the Earth's surface and elsewhere in the atmosphere."
The scientific community has been investigating the causes of climate change for decades. After thousands of studies, the scientific consensus is that it is "unequivocal that human influence has warmed the atmosphere, ocean and land since pre-industrial times."
Scientists have seen a powerful explosion from a mysterious, unknown object in space. Researchers do not know where the bright flash came from. But they believe that it may be something entirely ...