Hurricane Dorian Seen From Aboard The Space Station Via NASA Https://ift.tt/2Uq1OE8

Big beautiful spiral galaxy M101

A delightfully concise animated proof of the sum of the arithmetic progression of the naturals.

Mathematics is beautiful. <3

“Inside every person you know, there’s a person you don’t know”

“Number theory is nothing but questions that shouldn’t be asked.”

- applicable algebra professor

From Earthrise to the black hole: astronomy’s most famous images.

Photographs from history that capture humanity’s exploration of the heavens.

20 July 1969

One of the most iconic views of Earth, taken from the Apollo 11 spacecraft as it orbited the moon. Describing the scene, the astronaut Neil Armstrong said: ‘It suddenly struck me that that tiny pea, pretty and blue, was the Earth. I put up my thumb and shut one eye, and my thumb blotted out the planet Earth. I didn’t feel like a giant. I felt very, very small’ | This caption was updated on 11 April 2019 to correct the date the picture was taken, photograph: Nasa.

21 July 1969

Buzz Aldrin, the lunar module pilot for the first moon landing, poses on the lunar surface. The footprints of the astronauts are clearly visible in the soil. Neil Armstrong took the picture with a 70mm Hasselblad lunar surface camera Photograph: American Photo Archive/Alamy

25 February 1979

This dramatic view of Jupiter’s great red spot and its surroundings was obtained by the Voyager 1 space probe

Photograph: JPL/Nasa/UIG/Getty Images

14 February 1990

Often referred to as ‘the pale blue dot’ image, this picture was taken when Voyager 1 was 4bn miles (6.4bn km) from Earth and 32 degrees above the ecliptic plane. Earth is a mere point of light, just 0.12 pixels in size when viewed from that distance. The fuzzy light is scattered sunlight because Earth was close to the sun (from the perspective of Voyager)

Photograph: JPL/Nasa

6 January 2004

The first colour image of Mars taken by the panoramic camera on the Mars Exploration Rover Spirit. It was the sharpest photograph ever taken on the surface of the planet

Photograph: JPL/Nasa/AP

25 September 2012

Called the eXtreme Deep Field, or XDF, this photo was assembled by combining 10 years of Hubble space telescope photographs taken of a patch of sky at the centre of the original Hubble Ultra Deep Field. By collecting faint light over many hours of observation, the telescope revealed thousands of galaxies, both nearby and very distant, making it the deepest image of the universe ever taken at that time

Photograph: Hubble space telescope/Nasa/ESA

24 July 2015

A combination of images captured by the New Horizons space probe, with enhanced colours to show differences in the composition and texture of Pluto’s surface

Photograph: AP

10 April 2019

The first image of a black hole, captured by the Event Horizon telescope (EHT) – a planet-scale array of eight ground-based radio telescopes forged through international collaboration. The shadow of a black hole seen here is the closest we can come to an image of the black hole itself, a completely dark object from which light cannot escape

Photograph: EHT Collaboration/UCL

“The doctrine of the Incarnation therefore is of the greatest importance for Christian prayer. It is the basis both of Christian mysticism and Christian social action.”

— Kenneth Leech, True Prayer

The Milky Way, the International Space Station and Earth

Toshiko Yuasa, 1947. Yuasa was a nuclear physicist who worked in France at the Centre national de la recherche scientifique, and published a 1954 article warning of the dangers of hydrogen-bomb testing at Bikini Atoll.