Water: Goldfish and their varieties prefer slightly hard, alkaline water, pH 7.5-8.5. In nature they experience seasonal variations from 4°C/39°F to the 20s°C/75°+F, though are happiest between ...

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Investigate the truth behind the common belief that goldfish have short memories.

Jamie Carter is an award-winning reporter who covers the night sky. Comet NEOWISE (C/2020 F3) over the Badlands and formations of Dinosaur Provincial Park, Alberta, ... [+] Canada, on the night of ...

Will Comet A3, also known as Comet Tsuchinshan-ATLAS (C/2023 A3), be as bright as Comet McNaught, ... [+] also known as the "Great Comet" of 2007 (pictured). It’s expected to brighten ...

If you live in a colder climate, you may wonder what to do with your pond fish when your backyard oasis is at risk of ...

Speak to an English goldfish aficionado, however, and those aren’t Shubunkins, merely Calico comets. The British goldfish societies recognise two types of Shubunkin: the London, which is a short ...

Comet C/2023 A3 (Tsuchinshan-ATLAS) is rapidly approaching its closest approach to the sun, which may be the closest it comes to our planet. The comet will reach its brightest at about 36.4 ...

Have you seen comet Tsuchinshan-ATLAS yet? If you've not been able to glimpse the bright, icy space rock that's traveled from the edge of the solar system, it's not too late. But you need to see ...

And now it's been the once-in-a-lifetime comet. The comet first entered our orbit Oct. 12 when it was closest to Earth at approximately 44 million miles. Since then, observers, especially in ...

A week after the northern lights were visible in the Mid-Atlantic, a rare comet made an appearance. But, if you missed it Wednesday, don’t worry; you still have a few more days to catch it.