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The Latest Breaking News from Arcturus

Mars joins the Spring Triangle this week: Here’s when and how to see it

Mars will remain in the Spring Triangle until mid-September.

From Leaping Leo to the Big Dipper: Here's how to see the bright stars of spring rising in the east this season

From Leaping Leo to the Big Dipper: Here's how to see the bright stars of spring rising in the east this season

The bright constellations of winter have departed in the west, while the stars of spring are climbing the eastern and southern skies.

A new ‘guest star’ will appear in the sky in 2024 − a space scientist explains how nova events work and where to look

A new ‘guest star’ will appear in the sky in 2024 − a space scientist explains how nova events work and where to look

The stars aren’t fixed and unchanging, unlike what many ancient people thought. Once in a while, a star appears where there wasn’t one before, and then it fades away in a matter of days or weeks.

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See the moon meet Mars, follow the Arc to Arcturus and keep your eyes peeled for meteors and more this week

Discover your night sky this week, July 29 — Aug. 4, 2024, using just your naked eyes, no equipment necessary.

A 'new star' could appear in the sky any night now. Here's how to see the Blaze Star ignite

T Coronae Borealis will erupt with a magnificent explosion sometime between now and September, becoming visible to the unaided eye. Here's how to find it when it does.

A 'new star' will appear in the sky any night now. Here's how to watch the Blaze Star ignite.

The "Blaze Star" T Coronae Borealis is expected to erupt with a magnificent explosion sometime between now and September, becoming visible to the naked eye. Here's how to find it when it does.

See the stars of the Spring Triangle reach high in the sky this month

Within the stars of the Spring Triangle is the "Realm of the Galaxies," a veritable treasure trove of numerous star cities.

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Three key questions about deadly new Arcturus Covid variant - and horrific new symptom

Three key questions about deadly new Arcturus Covid variant - and horrific new symptom

The Covid subvariant Arcturus is leading to skyrocketing infections in India and has prompted health officials to reintroduce mandatory mask-wearing among other measures as a new symptom has emerged

The double stars of spring offer twice the skywatching fun this season

The double stars of spring offer twice the skywatching fun this season

Now that spring is officially here, we have a great view of some of the most interesting double stars in our sky.

June full moon 2025: The Strawberry Moon hides red star Antares

June full moon 2025: The Strawberry Moon hides red star Antares

The full moon of June 2025, the Strawberry Moon, will pass in front of the red supergiant star Antares the day before the full moon in an event known as an occultation.

May full moon 2025: The Flower Moon hides the red star Antares

May full moon 2025: The Flower Moon hides the red star Antares

The Full Flower Moon of 2025 will occur in the eastern U.S. during the evening hours of May 12. Two days later, the just-past-full moon will occult the star Antares.

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