Table of Contents
Did Mars have a river?
A satellite has revealed ancient Martian rivers in more detail than ever before. Researchers have spent decades looking for evidence of ancient water on Mars. As technology has progressed, more evidence has come to light that rivers, lakes and even oceans were once abundant on the red planet.
How are rivers of gas created on the sun?
“Powerful winds from the most massive stars at the center of the cloud produce a large flow of expanding gas. This gas then piles up with dust in front of winds from other massive stars that are pushing back against the flow.” Povich is lead author of a paper describing the new findings in the Dec.
What happened to the rivers on Mars?
Much of Mars’s water has disappeared since the planet formed. Planetary scientists suspect most was split into oxygen and hydrogen in the atmosphere, and the hydrogen lost to space. A new modelling study suggests if Mars did once have vast amounts of water, the majority is now locked in minerals in the planet’s crust.
How long would it take a river to get to Mars?
The trip to Mars took about seven months.
What’s the average number of sunspots in a solar cycle?
This chart from the NASA/Marshall Space Flight Center shows the sunspot number prediction for solar cycle 24. The NASA/Marshall Space Flight Center also shows the monthly averaged sunspot numbers based on the International Sunspot Number of all solar cycles dating back to 1750.
When did the first observations of sunspots begin?
(Daily observations of sunspots began in 1749 at the Zurich, Switzerland observatory.) One interesting aspect of solar cycles is that the sun went through a period of near zero sunspot activity from about 1645 to 1715.
What happens to the Earth during a sunspot maximum?
Therefore during sunspot maximums, the Earth will see an increase in the Northern and Southern Lights and a possible disruption in radio transmissions and power grids. The storms can even change polarity in satellites which can damage sophisticated electronics.