Space
Sex in space: Time to talk about it?
Sex in space has been a taboo subject for decades. But, these authors point out, it'll be necessary for the survival of the human race.
Astronomy Essentials
What are red giants?
What are red giants? Most main-sequence stars, like our sun, will become one. Red giants swell to such a large size they can swallow their inner planets.
Space

 Inspiration4: 1st all-civilian crew goes to space

SpaceX made history again on September 15, 2021, as it successfully launched Inspiration4, "the world’s first all-civilian mission."
Astronomy Essentials

Are day and night equal at the equinox?

Are day and night equal at an equinox? No. Earth's atmosphere and our sun team up to give us more day than night at an equinox.
Astronomy Essentials

September equinox: All you need to know

The equinox is September 22. From around the world on the day of an equinox, the sun pretty much rises and sets due east and west.
Space

SpaceX lasers define next era of Starlink technology

SpaceX lasers launched this week with a new batch of Starlink satellites marks a transition in tech for the satellite broadband network.
Astronomy Essentials

Harvest Moon 2021: All you need to know

In 2021, the Northern Hemisphere's Harvest Moon falls on September 20, or less than 2 days before the autumn equinox.
Space

Rerun of a supernova blast expected 2037

Astronomers expect to see a rerun of a supernova blast, whose light traveled 10 billion years to reach us, in about the year 2037.
Tonight

Moon, Saturn, Jupiter September 15 to 18

Watch for the moon, Saturn, Jupiter on September 15 to 18, 2021.
Space

Impact on Jupiter surprises skywatchers

An impact on Jupiter has stargazers looking skyward to see if they can spot any lingering evidence of the September 13, 2021, event.

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