On May 1, 1949, astronomer Gerard Kuiper spotted a new moon of Neptune while examining photographic plates from McDonald Observatory’s 82-inch telescope. It would be the last moon discovered at that ...

The evening sky presents quite a show this month. The bright planets Venus and Jupiter shine prominently in the northwest as the sky darkens. It’s best to look for Venus first. The brilliant planet ...

Saturn, rising early in the morning, has now become a bit easier to spot in the predawn sky. About 45 minutes before sunrise on May 1, it has reached an altitude of nearly 4° above the eastern horizon ...

Venus ends the month of April near a pair of 4th-magnitude stars in Taurus the Bull: Kappa (κ) and Upsilon (υ) Tauri. The bright planet now lies to the upper right of 1st-magnitude Aldebaran, the Bull ...

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Astronomers have discovered a new member of a rare and mysterious class of solar system objects known as sednoids — a subset of extreme trans-Neptunian objects (ETNOs) with exceptionally distant, ...

Rising levels of carbon dioxide in our atmosphere aren’t just affecting climate on Earth — they could also make weather in space more dramatic, says new research. A team led by scientists from the ...

April 21: Could this be your last glimpse of Comet PanSTARRS? The Lyrid meteor shower peaks this morning with minimal moonlight to interfere. The shower’s radiant — the point from which its meteors ...

Comet 10P/Tempel, also called Tempel 2, is continuing to brighten in the early-morning sky. Rising around midnight and visible until the sky streaks with dawn, two hours before sunrise on April 27 you ...

After passing south of Mars late on the 19th, Mercury passes 0.5° south of Saturn at 4 A.M. EDT this morning. Mars will later pass 1.3° north of Saturn at 2 P.M. EDT. This trio of planets congregates ...

NASA’s Lucy spacecraft visited the asteroid 52246 Donaldjohanson on April 20, 2025, coming within 600 miles (920 kilometers) of the object located in the inner region of the asteroid belt between Mars ...

Exciting planetary action takes place this month. Venus and Uranus vie for attention and lie close to each other in late April. Jupiter offers a lot to observe through a telescope, particularly events ...