“This was a very challenging observation for the instrument. The comet is around 10 000 to 100 000 times fainter than our ...
Picture yourself as a NASA rover on Mars. As the Sun lowers itself towards the horizon, the pinkish sky gives way to a blue ...
"You need so much water that we think these could be evidence of an ancient warmer and wetter climate where there was rain falling for millions of years." ...
Ancient shoreline features hint that water on Mars once formed a vast ocean.