A new radio telescope has arrived at the University of Virginia, bringing fresh hope to astronomers searching for one of the universe’s biggest mysteries, dark matter.
The telescope, a German-made DSA-2000 model, completed a long journey before reaching its destination. Weighing about 5,000 pounds and featuring a 5-meter-wide dish, the instrument first spent three weeks at sea. It finally arrived on March 31 at the university’s Grounds, packed securely in a large wooden crate.
The crate was unloaded at the University Cemetery parking lot near Alderman Road. A crane carefully lifted it from the truck while university staff and technicians watched closely. Once uncrated, the telescope began its slow, careful trip to the Fan Mountain Observatory, where it will soon begin operations. The road to the observatory tested both the machine and the crew.
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The nearly three-mile path is narrow, steep, and difficult to navigate. It winds through forested terrain with sharp turns, rocky patches, and sudden drops along the edge. The entire climb took about three hours. The telescope dish was carried on a large forklift, slowly driven by field technician Allen Arnst of Mtex Antenna Technology USA.
A small team walked alongside the moving equipment to ensure its safe passage. Brad Johnson, an associate professor of astronomy, joined researcher Mallory Helfenbein and graduate student Dillon Bass. They used hand signals to guide the driver through tight spots, warning about low branches, uneven ground, and other obstacles. Their effort paid off as the telescope finally reached its destination.
The project is supported by a $249,850 grant from the Jefferson Trust. Once fully installed and operational, the telescope will focus on detecting dark matter, an invisible substance that scientists believe makes up a large part of the universe.
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“Dark matter is one of the particles that make up the universe,” Johnson explained. “We call it dark matter because we do not know exactly what it is. We cannot see it with light, but we know it exists because of its gravitational effects.”
Unlike normal matter, dark matter does not interact with light. This makes it impossible to observe directly using traditional telescopes. Instead, scientists must rely on indirect methods to study it.
One such method involves searching for particles known as axions. Physicists believe axions could be a form of dark matter. These particles are extremely difficult to detect. However, under strong magnetic fields, axions may convert into microwaves, a signal that radio telescopes can capture.
Johnson and his team plan to use this method in a unique way.
They will point the telescope toward neutron stars, dense remnants of massive stars that exploded long ago. These stars are known for their extremely powerful magnetic fields.
“Neutron stars act like giant magnets,” Johnson said. “We know these strong magnetic fields exist, and we think axions might be present there too.”
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If axions are present near these stars, their interaction with the magnetic fields could produce detectable microwave signals. The new radio telescope is designed to pick up these faint signals.
The research approach is both scientific and strategic.
“We know where some neutron stars are, so we can observe those directly,” Johnson said. “We can also look at regions where we expect them to exist based on how stars form.”
He compared the search to fishing. “You cannot see all the fish in a lake, but if you understand the lake well, you can guess where they are,” he said.
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With this new telescope in place, astronomers at UVA are preparing to explore those fishing spots in space.
The journey to Fan Mountain may have been slow and difficult, but the mission ahead is even more ambitious. By studying neutron stars and scanning the skies for hidden signals, researchers hope to uncover clues about the invisible matter that shapes the universe. This effort could bring scientists one step closer to understanding what dark matter truly is and how it holds the cosmos together.
