David Dickinson, Author at Universe Today

February 8, 2024February 8, 2024 by David Dickinson

The Comet vs. the Eclipse: 12P/Pons-Brooks Heads Towards Perihelion in April

Comet 12P Pons-Brooks takes center stage this Spring.

Something is definitely up with the 12^th periodic comet in the catalog. We’re talking about Comet 12P Pons-Brooks, set to reach the first of two perihelia for the 21^st century this Spring. And the timing couldn’t be better, as the comet will also sit near the Sun just two weeks prior during the total solar eclipse of April 8^th 2024, spanning the North American continent from the southwest to the northeast. If the comet over-performs—a long shot, but multiple outbursts in 2023 suggest it just might—we could be in for the added treat of a naked eye comet near the Sun during totality.

January 26, 2024January 26, 2024 by David Dickinson

How Rare Are Total Solar Eclipses… Really?

2017 Eclipse — Totality, as seen during the 2017 total solar eclipse. Credit: Shahrin Ahmad.

As April’s ‘Great North American Eclipse’ nears, here’s a look at eclipses in time and space.

It comes around every total solar eclipse, and I fully expect to hear it trotted out once again this year, leading up to the Great North American eclipse on April 8^th, 2024.

It’s often repeated (usually around the time leading up to a total solar eclipse) that the syzygy of the Earth, Moon and Sun is special, allowing totality to occur. To be sure, eclipses are extraordinary and spectacular events, and standing in the shadow of the Moon during totality is a spectacle that shouldn’t be missed.

But just how rare are the circumstances we witness on Earth during totality across time and space?

December 26, 2023February 26, 2024 by David Dickinson

Top Astronomy Events for 2024

Astronomy 2024 features the final total solar eclipse for the CONUS until 2044, and much more.

It’s finally time. On April 8^th, 2024, the umbral shadow of the Moon crosses the United States for the second time in less than seven years. It’s a big deal, for sure. But there’s lots more in store for astronomy 2024. Here’s our annual Universe Today rundown for top skywatching events to watch for in astronomy 2024, coming to a sky near you.

December 14, 2023December 14, 2023 by David Dickinson

Betelgeuse Versus the Asteroid… What Happened?

Betelgeuse observed by ALMA (image credit: ALMA (ESO/NAOJ/NRAO)/E. O’Gorman/P. Kervella) overlayed with an artist's impression of a moving asteroid.

A rare occultation of the bright star Betelgeuse by asteroid 319 Leona turned up mixed results.

In science and astronomy, sometimes a negative or subtle result can be as interesting as a positive one. That’s just what occultation-chasers where confronted with this past Monday evening on the night of December 11th/12th, when asteroid 319 Leona occulted (passed in front of) the +0.5 magnitude star Betelgeuse.

December 11, 2023December 11, 2023 by David Dickinson

Why 2023 is a Fine Year for the Geminid Meteors

One of the best meteor showers of the year, the Geminids puts on a fine display in 2023.

December has one more sky watching treat in store for 2023. If skies are clear, watch for what’s rapidly becoming the best annual meteor shower of the year: the Geminid meteors.

December 6, 2023December 6, 2023 by David Dickinson

Famed Halley’s Comet Passes Aphelion This Weekend

Famous Halley’s Comet reaches a distant milestone this coming weekend.

It’s lonely out there in the frozen outer solar system. On Saturday, December 9^th, that most famous of all comets 1P/Halley reaches a hallmark point on its 75-year journey through the solar system, reaching aphelion or its most distant point from the Sun.

November 29, 2023December 5, 2023 by David Dickinson

The Solar Radius Might Be Slightly Smaller Than We Thought

SDO Sol — NASA SDO's view, of our tempestuous host star. NASA/SDO

A pioneering method suggests that the size of our Sun and the solar radius may be due revision.

Our host star is full of surprises. Studying our Sun is the most essential facet of modern astronomy: not only does Sol provide us with the only example of a star we can study up close, but the energy it provides fuels life on Earth, and the space weather it produces impacts our modern technological civilization.

Now, a new study, titled The Acoustic Size of the Sun suggests that a key parameter in modern astronomy and heliophysics—the diameter of the Sun—may need a slight tweak.

November 21, 2023December 4, 2023 by David Dickinson

ESA’s Juice Mission is Approaching Earth. Why Has it Come Home Before Visiting Jupiter?

JUICE Prepares for a first of its kind double-flyby next year.

A Jupiter-bound mission adjusted its course last week…for a rendezvous with Earth. The European Space Agency’s (ESA) Jupiter Icy moons Explorer (JUICE) fired its thrusters for 43 minutes on Friday, November 17^th. This sets the mission up for a first of its kind double-flyby next year on August 23^rd, as it passes the Moon and then the Earth to pick up momentum.

November 16, 2023November 16, 2023 by David Dickinson

Vaonis Introduces Limited Edition Vespera Passengers Smartscope

A top name in smartscope technology releases an exciting new limited edition unit.

A great product just got better. France-based telescope maker Vaonis announced this week the release of an upgraded version of their Vespera smartscope telescope. Dubbed Vespera: Passengers, the telescope promises users will “embark on a cosmic odyssey, unveiling the Universe’s best kept secrets.” But you have to act soon to reserve yours, as only 70 of the 222 limited edition units are left.

November 14, 2023November 22, 2023 by David Dickinson

Dedicated Amateur Astronomer Makes Rare Pair of Asteroid Discoveries

Orbit — The orbit of asteroid 623827 Nikandrilyich. Credit: NASA/JPL

Two recent asteroid discoveries made by an amateur astronomer highlight what is possible, with access to the right equipment.

When it comes to hunting for new astronomical discoveries these days, the competition is stiff. Gone are the days of the lone astronomer with a telescope perched on a lonely hilltop, patiently sweeping the skies looking for something new and out of place.

These days, it’s the ‘robotic eyes’ of all-sky surveys are more likely to make astronomical discoveries. Tirelessly canvassing the sky from dark locales night after night, these sentinels have definitely won the war when it comes to new discoveries. You’re more likely to see a survey name like ‘ATLAS’ or ‘PanSTARRS’ on a new comet today than say, ‘Johnson’ or ‘Smith’.