Vandag is Aardedag! ’n Dag waarop ons fokus om die aarde meer te bewaar.
Hoe kan jy Aardedag vier? As jy kan los jou voertuig in jou motorhuis en stap werk toe of vat publieke vervoer. Spaar water en gebruik minder elektrisiteit. Plant ’n boom en herwin glas, papier en plastiek. Jy kan selfs rommel op die strand of in ’n park gaan optel.
Hier’s ’n paar foto’s spesiaal vir aardedag:
New full-hemisphere views of Earth at night! Our scientists released a new global maps of Earth at night, providing the clearest yet composite view of the patterns of human settlement across our planet. This composite image, one of three new full-hemisphere views, provides a view of the Americas at night. The clouds and sun glint – added here for aesthetic effect – are derived from MODIS instrument land surface and cloud cover products. In the years since the 2011 launch of the NASA-NOAA Suomi National Polar-orbiting Partnership (NPP) satellite, we’ve been analyzing night lights data and developing new software and algorithms to make night lights imagery clearer, more accurate and readily available. They are now on the verge of providing daily, high-definition views of Earth at night, and are targeting the release of such data to the science community later this year. Image Credit: NASA Earth Observatory image by Joshua Stevens, using Suomi NPP VIIRS data from Miguel Román, NASA’s Goddard Space Flight Center #nasa #space #earth #satellite #earthrightnow #map #npp #noaa #science
Day dreaming of this place // by @drewtrush // NASA has recently released a new map of earth’s “night lights”, showing how the lights of human activity shine around the world. It’s getting harder for a lot of people to see the stars, and it’s getting increasingly difficult to find what stargazers refer to as Dark Sky sites. The Bortle scale, was created in 2001 by John E. Bortle to help amateur astronomers evaluate the dark sky potential of stargazing sites. A nine point scale, at Class 1, over 5,000 stars are visible and the Milky Way begins to take on a three dimensional shape as shadows are cast on dust clouds 390 Light-years away. Here, you can see the Sagittarius Star Cloud as well as the Prancing Horse Dark Dust Cloud. My favorite Dark Sky site recently has been the Temple of the Moon, Capitol Reef National Park, Utah while on a family road trip. How bright are the lights at night where you live, how many stars can you see? • Click the link in my bio to learn more and see the new NASA maps. @natgeocreative @thephotosociety @nasa A post shared by National Geographic (@natgeo) on
Spreading the word to those in far off timezones. The @natgeocreative signed prints flash sale is on until April 22nd. In honor of the upcoming #Earthday @natgeocreative is offering signed prints, including those seen here by @jimrichardsonng @ladzinski @melissafarlow and @timlaman for $100. Click on the link in my bio to see the whole collection. A portion of sales goes back towards the National Geographic Society to help fund more expeditions and stories that produces work like the beautiful and powerful images seen here. A post shared by Steve Winter (@stevewinterphoto) on