Sign Up for Our Amazing Newsletter!
A daily update by email. Science news, great photos, sky alerts.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Human World
Today's Image
Bubble nebula: Why image an object again?
Astrophotographer Steven Bellavia captured images of the Bubble nebula in 2018 and 2023. Here, he explains why astrophotographers target the same object twice.
October 3, 2023
Astronomy Essentials
Visible planets and night sky for October
The moon will hang near the orange star Aldebaran and red star Betelgeuse. Visible planets and night sky, here! See them before midnight until dawn.
Sun
Sun activity rises to moderate after an M1.9 flare
Sun activity for October 3 is moderate, after an eruptive M1.9 flare from AR3455. A filament eruption produced a possibly-Earth-bound coronal mass ejection.
October 3, 2023
Space
More galaxies like our Milky Way than previously thought?
New data shows galaxies like our Milky Way might have been 10 times more common in the early universe than previously believed.
October 2, 2023
Astronomy Essentials
2nd eclipse season of 2023 is here, with 2 eclipses
There are many cycles in the heavens. We're coming up to a noticeable cycle - the 2nd eclipse season this year - right now. It starts with a solar eclipse.
October 1, 2023
Astronomy Essentials
Ways to watch a solar eclipse safely on October 14
Some tips for observing the sun safely during the October 14 solar eclipse, plus videos and links, here. You can observe sunspots safely as well.
October 1, 2023
Space
Curiosity rover reaches ancient ridge of mud and boulders
After 3 attempts, NASA's Curiosity rover has finally reached a large ridge composed of ancient mud and rocks. The ridge preserves a record of Mars' wet past.
October 1, 2023
Sun
Aurora season: Why more auroras at equinoxes?
An aurora season occurs in October and March each year, due to the way the magnetic fields of the sun and the Earth work in conjunction with sun-Earth geometry.
October 1, 2023
Astronomy Essentials
How to see and enjoy Jupiter’s moons
October and November 2023 are great months for seeing Jupiter's moons Io, Europa, Ganymede and Callisto with binoculars or a small telescope.
October 1, 2023
Spaceflight
SpaceX Starlink launches for October. Learn more here
SpaceX currently has 1 Starlink launch planned for the month of October 2023. Learn more about it, including how to watch, here.
October 1, 2023
Subscribe now! A daily update with Science news, great photos, sky alerts.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Space
View All
Astronomy Essentials
View All
Earth
View All
Human World
View All
