Search results
The sun's writhing magnetic fields – caused by the movement of the charged material, known as plasma, it's made of – leads to constant change on timescales from milliseconds to billions of years. We see giant solar eruptions such as solar flares and coronal mass ejections that can last minutes to hours. We see dark sunspots form, grow and ...
- Our Sun: Facts - Science@NASA
The Sun doesn't behave the same way all the time. It goes...
- What Is the Sun’s Role in Climate Change? - Science@NASA
Sep 06, 2019. The Sun powers life on Earth; it helps keep...
- Our Sun: Facts - Science@NASA
Jan 1, 2019 · The Sun reaches its highest point at a variety of times as the seasons change, not merely at noon every day. ... The analemma is the beautiful, natural shape traced out by the Sun over time ...
- Ethan Siegel
The Sun, as it burns through its fuel, gains its energy by fusing hydrogen, in a chain reaction, into helium. The proton-proton chain is how our Sun (and most stars) get their energy, since the ...
The Sun doesn't behave the same way all the time. It goes through phases of high and low activity, which make up the solar cycle. Approximately every 11 years, the Sun’s geographic poles change their magnetic polarity – that is, the north and south magnetic poles swap.
- The Birth of the Sun: According to Nebular Theory, the Sun and all the planets of our Solar System began as a giant cloud of molecular gas and dust. Then, about 4.57 billion years ago, something happened that caused the cloud to collapse.
- The Main Sequence: The Sun, like most stars in the Universe, is on the main sequence stage of its life, during which nuclear fusion reactions in its core fuse hydrogen into helium.
- Core Hydrogen Exhaustion: All things must end. That is true for us, that is true for the Earth, and that is true for the Sun. It’s not going to happen anytime soon, but one day in the distant future, the Sun will run out of hydrogen fuel and slowly slouch towards death.
- Final Phase and Death: Once it reaches the Red-Giant-Branch (RGB) phase, the Sun will haves approximately 120 million years of active life left. But much will happen in this amount of time.
Sep 6, 2019 · Sep 06, 2019. The Sun powers life on Earth; it helps keep the planet warm enough for us to survive. It also influences Earth’s climate: We know subtle changes in Earth’s orbit around the Sun are responsible for the comings and goings of the past ice ages. But the warming we’ve seen over the last few decades is too rapid to be linked to ...
Oct 11, 2024 · Every 11 years or so, the Sun's magnetic field completely flips. This means that the Sun's north and south poles switch places. Then it takes about another 11 years for the Sun’s north and south poles to flip back again. The solar cycle affects activity on the surface of the Sun, such as sunspots which are caused by the Sun's magnetic fields ...
People also ask
How does the Sun change during each cycle?
How does solar energy change over time?
How does the solar cycle affect the surface of the Sun?
How long does it take for the sun to flip back?
Why do sunset & sunrise times vary throughout the year?
How does a star change over time?
