On Jan. 31, 1958, Explorer 1 became the first satellite launched by the United States. Its primary science instrument, a ...

Every day on Earth, you experience weather. You feel the wind blowing and see clouds move across the sky. Sometimes there are storms where the wind gets really strong, it might rain, or there might be ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. [WATCH: In the video player above, check out ...

Our Sun, that steady burning ball of gas that has faithfully illuminated Earth for billions of years, is slowly but relentlessly growing brighter. This might sound like good news, but it's actually ...

Earth’s orbit around the Sun isn’t a perfect circle—it’s slightly elliptical. Each year, around July 2 or 3, Earth reaches its farthest point from the Sun, known as aphelion. Around January 2 or 3, ...

This event, known as aphelion, happens once per year typically around two weeks after the summer solstice in June. Although the Earth’s distance from the Sun does not affect the seasons, aphelion does ...

Solar Cycle 25 has reached its most active phase, bringing stronger solar flares and geomagnetic storms that may affect Earth ...

If you have been worried about the two large 'holes' opening up on the Sun and pointing straight at Earth, you are not alone. Social media posts have said that these enormous gaps in the Sun's ...

"We consider this phenomenon as a promising candidate to explain the fact that the solar activity is much more benign than that of other sun-like stars." When you purchase through links on our site, ...

Learn the key differences between lunar and solar eclipses, including how long they last, how often they occur and why lunar eclipses can be seen by more people at one time.

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Curious Kids is a series for children of all ages. If you have a question you’d like ...