What is the greenhouse effect? - NASA Science
The greenhouse effect is the process through which heat is trapped near Earth’s surface by substances known as ‘greenhouse gases.’ Imagine these gases as a cozy blanket enveloping our planet, helping to maintain a warmer temperature than it would have otherwise. Greenhouse gases consist of carbon dioxide, methane, ozone, nitrous oxide, chlorofluorocarbons, and …
The Causes of Climate Change - Science@NASA
In its Sixth Assessment Report, the Intergovernmental Panel on Climate Change, composed of scientific experts from countries all over the world, concluded that it is unequivocal that the increase of CO 2, methane, and nitrous oxide in the atmosphere over the industrial era is the result of human activities and that human influence is the principal driver of many changes …
Webb Image Galleries - NASA Science
A curated gallery of over a decade of images of Webb's design, build, test and integration leading to it's launch on December 25, 2021. The image below is a SLIDESHOW. Hover over the image to see the image title and controls. Click the image to go to a detail page with more info and the ability to download the image at various resolutions ...
What Is Climate Change? - NASA Science
Climate change is a long-term change in the average weather patterns that have come to define Earth’s local, regional and global climates. These changes have a broad range of observed effects that are synonymous with the term. Changes observed in Earth’s climate since the mid-20th century are driven by human activities, particularly fossil fuel burning, […]
Hubble Images - NASA Science
Flip through Hubble's numerous Flickr albums and see astronauts at work in space, behind the scenes of mission operations, and Hubble's iconic images from nebulae to gravitational lens. M57, or the Ring Nebula, is a planetary nebula, the glowing remains of a sun-like star. The tiny white dot in the center of the nebula is the star’s hot core ...
Where are Voyager 1 and Voyager 2 Now? - Science@NASA
Mar 10, 2024 · Eyes on Voyager. This near real-time 3D data visualization uses actual spacecraft and planet positions to show the location of both Voyager 1 and 2 and many other spacecraft exploring our galactic neighborhood. Voyager 1's position in October 2024.
What Is the Sun’s Role in Climate Change? - Science@NASA
Sep 6, 2019 · The Sun powers life on Earth; it helps keep the planet warm enough for us to survive. It also influences Earth’s climate: We know subtle changes in Earth’s orbit around the Sun are responsible for the comings and goings of the past ice ages. But the warming we’ve seen over the last few decades is too rapid to be linked to changes in Earth ...
The Pale Blue Dot – Download - Science@NASA
Feb 14, 1990 · The Pale Blue Dot is a photograph of Earth taken Feb. 14, 1990, by NASA’s Voyager 1 at a distance of 3.7 billion miles (6 billion kilometers) from the Sun. The image inspired the title of scientist Carl Sagan's book, "Pale Blue Dot: A Vision of the Human Future in Space," in which he wrote: "Look again at that dot. That's here. That's home. That's us."
Webb's Latest Images - Science@NASA
Latest 2024 Images The image below is a SLIDESHOW. Hover over the image to see the image title and controls. Click the image to go to a detail page with more info and the ability to download the image at various resolutions (click downward arrow in lower right corner). For more information about Webb’s images […]
ESA/NASA’s SOHO Spies Bright Comet Making Debut in Evening Sky
The tail of comet C/2023 A3 Tsuchinshan-ATLAS spanned the view of the Solar and Heliospheric Observatory (SOHO) on Oct. 10, 2024. ESA/NASA. The ESA (European Space Agency) and NASA Solar and Heliospheric Observatory (SOHO) has captured images of the second-brightest comet to ever pass through its field of view during the spacecraft’s nearly ...