The week's best news and sport photos, from California wildfires and Vietnam floods, to the battle for Raqqa, Kenya election protests and Rohingya Muslim refugee crisis.
A breakthrough in the research, scientists believe, would help prevent humanitarian disasters and false alarms.
The participants must remain in the same position for entire duration of the Nasa study, which causes their bodies to adapt as if they were in space.
The data transmitted by Sentinel-5p will also help scientists to further study the formation of holes in the Earth's ozone layer.
Extensive sea ice formation in East Antarctica kill thousands of Adélie penguins – the second such devastation in four years.
The distance of 66,000 light years goes way beyond the previous record for such measurement and could soon help scientists understand the extent of our galaxy.
The storm that hit Vietnam caused its worst flooding in years, submerging more than 30,000 houses and damaging infrastructure, crops and livestock.
The gruesome "undertaking behaviours" were found to increase the chances of a new colony succeeding.
For millenia people have wondered about the "sea people" invasions of the eastern Mediterranean that ended the Bronze Age, new documents shed some light.
The burial garments were found in 9th and 10th century graves in Birka and Gamla Uppsala in Sweden and kept in storage for more than 100 years before being re-examined.
But wait – is it really a question of bromance vs romance? Bromances are good for men's mental health, but researchers say this comes at men's girlfriends' expense.
Rising emissions of harmful chemicals could threaten the recovery of the Earth's protective ozone layer, 30 years after a successful international treaty was agreed to protect it.
Novae occur when dying stars dramatically erupt back into life, suddenly becoming incredibly bright. When they were first observed, they were mistaken for new stars.
An object known as TC4 came within 26,000 miles of the planet's surface - which is inside the moon's orbit and just above the altitude of satellites which orbit the Earth
The "canyons" are 200m deep and 15km across, and run the entire length of the underside of the Dotson ice shelf.