In this February 19, 2017 photo, a couple dances during the “If you don't give me....then you lend me” Carnival street party on Ipanema beach, in Rio de Janeiro, Brazil. The typical view of Carnival in Brazil is anything goes, with no headdress too big, no outfit too small, no song too ribald, but this year some organizers of the world's best known party are drawing the line at lyrics that are sexist, homophobic or racist. (Photo by Silvia Izquierdo/AP Photo)

Some of the best entries so far in the 2016 Insight Astronomy Photographer of the Year competition. There are two weeks left to enter, and the winners will be announced in September. Here: Aurora over Laksvatn Fjord, Laksvatn, Norway. The aurora borealis dances in the skies over the town of Laksvatn, with the Milky Way to the left. The image is a single shot with no compositing, only post-processing to bring out the aurora, and some colour corrections. The photographer Matt Walford said: “I love the way the northern lights look like they are just wistfully dancing over the fjord, framed by the mountains on either side”. (Photo by Matt Walford/National Maritime Museum)

Sequence photography is a technique of shooting a series of images in where the subject is captured in successive motion. This technique conveys motion in a static image, and comes in great use for sport based photography. A merged photo sequence can radically show a different perspective much more than what can be captured in a single image, you get to experience the entire process of the action taken by the athlete.

Residents of Reddit have found a strange phenomenon. If you make a circle on the floor with anything from tinfoil to scotch tape, the house cat would simply love to sit right in the middle of it. Is it a fake, or do cats actually like sitting in circles on the floor? We cannot answer this question until we test it out ourselves. However, one thing is for sure – cats are curious and adorable creatures that never cease to amaze us. So, if you own a cat, try this experiment yourself, and see if your cat likes to sit in an imaginary circle on the floor.

Sharafkhaneh port and lake Urmia. Masoud Ghadiri (Iran). The summer Milky Way is very prominent in this photo. On the galaxy zone, Saturn is located besides the Lagoon nebula. On the right of the horizon, you can see the extreme light pollution of Urmia, which is caused by ever-increasing city development. (Photo by Masoud Ghadiri/National Maritime Museum)

A woman dances as people gather near EU headquarters during a so called “European Demonstration for Freedom and Democracy” protest against COVID-19 security measures taken by European governments, in Brussels, Saturday, May 29, 2021. (Photo by Olivier Matthys/AP Photo)

A Humboldt penguin stands on weighing scales whilst being photographed by members of the press during a photocall at the annual weigh-in at London Zoo in London, Britain, 24 August 2016. Every animal that is in the zoo is weighed and measured and the statistics recorded so the data can be shared with zoos across the world. (Photo by Hannah McKay/EPA)

People follow king penguins exploring their outdoor pen, during a so-called “penguin parade”, when the animals walk outside their enclosure and the visitors can walk behind them, at Zurich's Zoo in Zurich, Switzerland January 28, 2017. (Photo by Arnd Wiegmann/Reuters)